./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s12if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s12if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:05:13,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:05:13,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:05:13,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:05:13,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:05:13,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:05:13,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:05:13,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:05:13,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:05:13,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:05:13,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:05:13,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:05:13,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:05:13,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:05:13,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:05:13,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:05:13,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:05:13,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:05:13,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:05:13,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:05:13,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:05:13,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:05:14,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:05:14,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:05:14,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:05:14,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:05:14,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:05:14,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:05:14,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:05:14,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:05:14,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:05:14,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:05:14,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:05:14,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:05:14,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:05:14,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:05:14,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:05:14,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:05:14,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:05:14,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:05:14,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:05:14,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:05:14,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:05:14,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:05:14,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:05:14,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:05:14,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:05:14,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:05:14,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:05:14,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:05:14,033 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:05:14,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:05:14,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:05:14,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:05:14,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:05:14,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:14,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:05:14,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:05:14,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:05:14,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:05:14,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:05:14,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:05:14,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:05:14,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:05:14,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:05:14,037 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_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 [2021-12-06 23:05:14,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:05:14,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:05:14,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:05:14,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:05:14,239 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:05:14,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/s12if.c [2021-12-06 23:05:14,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/data/2fb8030df/7beb469d78f848b48def42aa972bdfc7/FLAGe11e43687 [2021-12-06 23:05:14,639 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:05:14,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/sv-benchmarks/c/array-fpi/s12if.c [2021-12-06 23:05:14,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/data/2fb8030df/7beb469d78f848b48def42aa972bdfc7/FLAGe11e43687 [2021-12-06 23:05:14,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/data/2fb8030df/7beb469d78f848b48def42aa972bdfc7 [2021-12-06 23:05:14,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:05:14,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:05:14,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:14,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:05:14,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:05:14,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5292b0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14, skipping insertion in model container [2021-12-06 23:05:14,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:05:14,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:05:14,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-12-06 23:05:14,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:14,830 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:05:14,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/sv-benchmarks/c/array-fpi/s12if.c[588,601] [2021-12-06 23:05:14,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:14,858 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:05:14,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14 WrapperNode [2021-12-06 23:05:14,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:14,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:14,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:05:14,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:05:14,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,894 INFO L137 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2021-12-06 23:05:14,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:14,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:05:14,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:05:14,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:05:14,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:05:14,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:05:14,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:05:14,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:05:14,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (1/1) ... [2021-12-06 23:05:14,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:14,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:05:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:05:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:05:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:05:14,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:05:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:05:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:05:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:05:14,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:05:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:05:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:05:15,049 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:05:15,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:05:15,169 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:05:15,175 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:05:15,176 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 23:05:15,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:15 BoogieIcfgContainer [2021-12-06 23:05:15,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:05:15,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:05:15,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:05:15,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:05:15,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:05:14" (1/3) ... [2021-12-06 23:05:15,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6d0b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:15, skipping insertion in model container [2021-12-06 23:05:15,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:14" (2/3) ... [2021-12-06 23:05:15,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6d0b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:15, skipping insertion in model container [2021-12-06 23:05:15,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:15" (3/3) ... [2021-12-06 23:05:15,186 INFO L111 eAbstractionObserver]: Analyzing ICFG s12if.c [2021-12-06 23:05:15,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:05:15,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:05:15,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:05:15,246 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:05:15,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:05:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:05:15,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:15,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:15,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2021-12-06 23:05:15,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:15,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262547148] [2021-12-06 23:05:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:15,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:15,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:15,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262547148] [2021-12-06 23:05:15,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262547148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:15,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:15,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:05:15,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021463265] [2021-12-06 23:05:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:15,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:05:15,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:05:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:05:15,435 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:15,446 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-12-06 23:05:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:05:15,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 23:05:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:15,454 INFO L225 Difference]: With dead ends: 42 [2021-12-06 23:05:15,454 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 23:05:15,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:05:15,459 INFO L933 BasicCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:15,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 23:05:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 23:05:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-06 23:05:15,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-12-06 23:05:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:15,482 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-06 23:05:15,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-12-06 23:05:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 23:05:15,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:15,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:15,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:05:15,483 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:15,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2021-12-06 23:05:15,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:15,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314058932] [2021-12-06 23:05:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:15,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:15,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314058932] [2021-12-06 23:05:15,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314058932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:15,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:15,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 23:05:15,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988642715] [2021-12-06 23:05:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:15,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:05:15,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:05:15,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:05:15,546 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:15,596 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-12-06 23:05:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:05:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 23:05:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:15,598 INFO L225 Difference]: With dead ends: 39 [2021-12-06 23:05:15,598 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 23:05:15,598 INFO L932 BasicCegarLoop]: 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 [2021-12-06 23:05:15,599 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:15,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 11 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 23:05:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-06 23:05:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-12-06 23:05:15,604 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-12-06 23:05:15,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:15,604 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-12-06 23:05:15,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-12-06 23:05:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:05:15,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:15,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:15,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:05:15,606 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:15,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2021-12-06 23:05:15,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:15,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965727089] [2021-12-06 23:05:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:15,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:15,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:15,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965727089] [2021-12-06 23:05:15,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965727089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:15,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809169161] [2021-12-06 23:05:15,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:15,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:15,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:15,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:15,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:05:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:15,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:05:15,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:16,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:05:16,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:16,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:16,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:16,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:05:16,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 23 [2021-12-06 23:05:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:16,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:16,432 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_45 (Array Int Int))) (let ((.cse0 (select v_ArrVal_45 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (or (not (= 2 .cse0)) (= (* 2 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse0))))) is different from false [2021-12-06 23:05:16,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:16,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-06 23:05:16,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:05:16,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-12-06 23:05:16,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 23:05:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 23:05:16,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809169161] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:16,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:16,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 21 [2021-12-06 23:05:16,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456998459] [2021-12-06 23:05:16,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:16,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 23:05:16,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 23:05:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=304, Unknown=1, NotChecked=36, Total=420 [2021-12-06 23:05:16,579 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:16,817 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-12-06 23:05:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:05:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:05:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:16,819 INFO L225 Difference]: With dead ends: 42 [2021-12-06 23:05:16,819 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 23:05:16,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=463, Unknown=1, NotChecked=46, Total=650 [2021-12-06 23:05:16,821 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:16,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 72 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 144 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2021-12-06 23:05:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 23:05:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2021-12-06 23:05:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-06 23:05:16,827 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2021-12-06 23:05:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:16,827 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-06 23:05:16,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-06 23:05:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:05:16,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:16,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:16,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:17,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:17,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2021-12-06 23:05:17,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:17,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349526640] [2021-12-06 23:05:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:17,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:17,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:17,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387820220] [2021-12-06 23:05:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:17,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:17,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:17,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:17,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:05:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:17,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:05:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:17,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 23:05:17,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:05:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:17,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:17,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-12-06 23:05:17,250 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:05:17,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2021-12-06 23:05:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:17,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349526640] [2021-12-06 23:05:17,264 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387820220] [2021-12-06 23:05:17,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387820220] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:17,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:17,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2021-12-06 23:05:17,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897834277] [2021-12-06 23:05:17,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:17,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:05:17,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:05:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:05:17,266 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:17,396 INFO L93 Difference]: Finished difference Result 59 states and 76 transitions. [2021-12-06 23:05:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:05:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:05:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:17,397 INFO L225 Difference]: With dead ends: 59 [2021-12-06 23:05:17,397 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 23:05:17,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:05:17,399 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:17,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 64 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 23:05:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2021-12-06 23:05:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-12-06 23:05:17,405 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 21 [2021-12-06 23:05:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:17,406 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-06 23:05:17,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-12-06 23:05:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:05:17,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:17,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:17,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:05:17,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:17,609 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:17,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1649883961, now seen corresponding path program 1 times [2021-12-06 23:05:17,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:17,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700091097] [2021-12-06 23:05:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:17,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:17,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700091097] [2021-12-06 23:05:17,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700091097] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:17,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933557171] [2021-12-06 23:05:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:17,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:17,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:17,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:17,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:05:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:17,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:05:17,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:17,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:17,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:05:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:18,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:18,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-06 23:05:18,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-06 23:05:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:18,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933557171] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:18,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:18,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2021-12-06 23:05:18,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569163140] [2021-12-06 23:05:18,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:18,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:05:18,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:05:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:18,060 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:18,434 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2021-12-06 23:05:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:05:18,434 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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 21 [2021-12-06 23:05:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:18,435 INFO L225 Difference]: With dead ends: 79 [2021-12-06 23:05:18,435 INFO L226 Difference]: Without dead ends: 65 [2021-12-06 23:05:18,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:05:18,436 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 59 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:18,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 74 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:18,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-06 23:05:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2021-12-06 23:05:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 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) [2021-12-06 23:05:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2021-12-06 23:05:18,443 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2021-12-06 23:05:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:18,443 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2021-12-06 23:05:18,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:18,444 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2021-12-06 23:05:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 23:05:18,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:18,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:18,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:18,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2021-12-06 23:05:18,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898375249] [2021-12-06 23:05:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:18,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:18,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898375249] [2021-12-06 23:05:18,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898375249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510294869] [2021-12-06 23:05:18,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:18,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:18,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:18,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:05:18,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:05:18,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:18,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:05:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:18,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:18,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510294869] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:18,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:18,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 23:05:18,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531355664] [2021-12-06 23:05:18,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:18,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:05:18,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:18,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:05:18,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:18,937 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:19,029 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2021-12-06 23:05:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:05:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-06 23:05:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:19,031 INFO L225 Difference]: With dead ends: 85 [2021-12-06 23:05:19,031 INFO L226 Difference]: Without dead ends: 75 [2021-12-06 23:05:19,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:05:19,032 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:19,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 31 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-06 23:05:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2021-12-06 23:05:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-12-06 23:05:19,039 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2021-12-06 23:05:19,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:19,039 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-12-06 23:05:19,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-12-06 23:05:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:05:19,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:19,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:19,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:19,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:19,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2021-12-06 23:05:19,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:19,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42323532] [2021-12-06 23:05:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:19,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42323532] [2021-12-06 23:05:19,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42323532] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202978268] [2021-12-06 23:05:19,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:05:19,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:19,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:19,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:05:19,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:05:19,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:19,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:05:19,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:19,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:05:19,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202978268] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:19,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:19,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 23:05:19,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50953048] [2021-12-06 23:05:19,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:19,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:05:19,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:05:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:19,449 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-12-06 23:05:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:19,510 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2021-12-06 23:05:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:05:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) Word has length 24 [2021-12-06 23:05:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:19,512 INFO L225 Difference]: With dead ends: 78 [2021-12-06 23:05:19,512 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 23:05:19,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:05:19,513 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:19,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 22 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 23:05:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-12-06 23:05:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-12-06 23:05:19,517 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2021-12-06 23:05:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:19,517 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-12-06 23:05:19,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-12-06 23:05:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-12-06 23:05:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:05:19,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:19,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:19,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:19,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:19,720 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2021-12-06 23:05:19,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:19,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327807985] [2021-12-06 23:05:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:19,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:05:20,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:20,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327807985] [2021-12-06 23:05:20,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327807985] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:20,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860836859] [2021-12-06 23:05:20,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:05:20,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:20,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:20,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:20,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:05:20,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:05:20,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:20,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:05:20,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:20,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:20,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:20,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:05:20,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,528 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:20,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2021-12-06 23:05:20,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:20,661 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:20,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 30 [2021-12-06 23:05:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:20,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:20,948 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_207 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_207))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_207 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))))) (or (not (= 2 .cse0)) (not (= .cse1 2)) (= (* 2 c_~N~0) (+ .cse1 .cse0 .cse2)))))))) is different from false [2021-12-06 23:05:21,281 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_207 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_69| Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_207))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_207 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_69| 4)))) (.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (and (<= (div (+ .cse1 .cse0 (- 1) .cse2) 2) |c_ULTIMATE.start_main_~i~0#1|) (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) (div (+ .cse1 .cse0 .cse2) 2))))))))) is different from false [2021-12-06 23:05:21,364 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_207 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_69| Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_207))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_207 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_69| 4)))) (.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))))) (or (and (<= (div (+ .cse0 .cse1 (- 1) .cse2) 2) (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (div (+ .cse0 .cse1 .cse2) 2))) (not (= .cse1 2)) (not (= .cse0 2)))))))) is different from false [2021-12-06 23:05:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 7 not checked. [2021-12-06 23:05:21,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860836859] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:21,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:21,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 34 [2021-12-06 23:05:21,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528403399] [2021-12-06 23:05:21,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:21,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 23:05:21,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 23:05:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=835, Unknown=4, NotChecked=180, Total=1122 [2021-12-06 23:05:21,474 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:22,538 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2021-12-06 23:05:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:05:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 23:05:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:22,540 INFO L225 Difference]: With dead ends: 84 [2021-12-06 23:05:22,540 INFO L226 Difference]: Without dead ends: 80 [2021-12-06 23:05:22,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=370, Invalid=2188, Unknown=4, NotChecked=300, Total=2862 [2021-12-06 23:05:22,541 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 378 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 124 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 399 Invalid, 0 Unknown, 378 Unchecked, 0.2s Time] [2021-12-06 23:05:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-06 23:05:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2021-12-06 23:05:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2021-12-06 23:05:22,548 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 29 [2021-12-06 23:05:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:22,549 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2021-12-06 23:05:22,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 34 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2021-12-06 23:05:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:05:22,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:22,550 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:22,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:05:22,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 23:05:22,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:22,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2021-12-06 23:05:22,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:22,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089601045] [2021-12-06 23:05:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:22,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:22,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:22,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932986160] [2021-12-06 23:05:22,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:22,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:22,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:22,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:22,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:05:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:22,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 23:05:22,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:22,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-06 23:05:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:22,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:05:22,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:05:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:05:22,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:22,924 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 2)) is different from false [2021-12-06 23:05:22,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_252 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_252) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2021-12-06 23:05:22,960 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:22,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2021-12-06 23:05:22,964 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:22,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 23:05:22,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2021-12-06 23:05:23,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089601045] [2021-12-06 23:05:23,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932986160] [2021-12-06 23:05:23,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932986160] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:23,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:23,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-06 23:05:23,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351498792] [2021-12-06 23:05:23,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:23,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 23:05:23,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 23:05:23,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=217, Unknown=2, NotChecked=62, Total=342 [2021-12-06 23:05:23,016 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 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) [2021-12-06 23:05:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:23,169 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2021-12-06 23:05:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:05:23,169 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 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) Word has length 29 [2021-12-06 23:05:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:23,170 INFO L225 Difference]: With dead ends: 108 [2021-12-06 23:05:23,170 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 23:05:23,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=293, Unknown=2, NotChecked=74, Total=462 [2021-12-06 23:05:23,171 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:23,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 91 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2021-12-06 23:05:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 23:05:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2021-12-06 23:05:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.275) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-12-06 23:05:23,185 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 29 [2021-12-06 23:05:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:23,185 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-06 23:05:23,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 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) [2021-12-06 23:05:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-12-06 23:05:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:05:23,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:23,186 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:23,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:23,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:23,387 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:23,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2021-12-06 23:05:23,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:23,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286872508] [2021-12-06 23:05:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:23,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:23,395 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:23,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958037562] [2021-12-06 23:05:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:23,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:23,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:23,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:23,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:05:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:23,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:05:23,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:23,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:05:23,472 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:05:23,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:05:23,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:05:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:23,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:23,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 23:05:23,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-06 23:05:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:23,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286872508] [2021-12-06 23:05:23,553 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:23,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958037562] [2021-12-06 23:05:23,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958037562] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:23,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:23,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-06 23:05:23,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961099006] [2021-12-06 23:05:23,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:23,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:05:23,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:05:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:05:23,555 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:23,632 INFO L93 Difference]: Finished difference Result 123 states and 158 transitions. [2021-12-06 23:05:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:05:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 23:05:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:23,633 INFO L225 Difference]: With dead ends: 123 [2021-12-06 23:05:23,633 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 23:05:23,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:05:23,634 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:23,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 53 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 23:05:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 81. [2021-12-06 23:05:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2021-12-06 23:05:23,645 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 29 [2021-12-06 23:05:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:23,645 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2021-12-06 23:05:23,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2021-12-06 23:05:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 23:05:23,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:23,647 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:23,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:05:23,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:23,847 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2021-12-06 23:05:23,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:23,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152172519] [2021-12-06 23:05:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:23,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:23,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:23,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152172519] [2021-12-06 23:05:23,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152172519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:23,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640051186] [2021-12-06 23:05:23,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:05:23,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:23,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:23,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:05:23,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 23:05:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:23,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:05:23,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:24,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:24,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640051186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:24,055 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:24,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-06 23:05:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675369600] [2021-12-06 23:05:24,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:24,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:05:24,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:05:24,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:05:24,057 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:24,189 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2021-12-06 23:05:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:05:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 23:05:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:24,191 INFO L225 Difference]: With dead ends: 115 [2021-12-06 23:05:24,191 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 23:05:24,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:05:24,192 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 78 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:24,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 27 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 23:05:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2021-12-06 23:05:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-12-06 23:05:24,208 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 31 [2021-12-06 23:05:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:24,208 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-12-06 23:05:24,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-12-06 23:05:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 23:05:24,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:24,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:24,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:05:24,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 23:05:24,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2021-12-06 23:05:24,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:24,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567904979] [2021-12-06 23:05:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:24,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:24,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567904979] [2021-12-06 23:05:24,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567904979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311948683] [2021-12-06 23:05:24,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:05:24,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:24,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:24,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:05:24,544 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 23:05:24,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:24,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:05:24,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:24,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:05:24,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311948683] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:24,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:24,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-06 23:05:24,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103926598] [2021-12-06 23:05:24,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:24,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:05:24,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:05:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:05:24,634 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2021-12-06 23:05:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:24,718 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2021-12-06 23:05:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:05:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-06 23:05:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:24,718 INFO L225 Difference]: With dead ends: 103 [2021-12-06 23:05:24,718 INFO L226 Difference]: Without dead ends: 50 [2021-12-06 23:05:24,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:24,719 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:24,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-06 23:05:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-12-06 23:05:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 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) [2021-12-06 23:05:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-12-06 23:05:24,723 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 32 [2021-12-06 23:05:24,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:24,723 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-12-06 23:05:24,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-12-06 23:05:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:05:24,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:24,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:24,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:05:24,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 23:05:24,926 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2021-12-06 23:05:24,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:24,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851405697] [2021-12-06 23:05:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:24,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 23:05:25,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:25,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851405697] [2021-12-06 23:05:25,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851405697] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:25,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737659965] [2021-12-06 23:05:25,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:05:25,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:25,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:25,261 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:25,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:05:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:25,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 23:05:25,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:25,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:05:25,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:25,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:25,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:05:25,570 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:25,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 41 [2021-12-06 23:05:25,649 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:25,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 23:05:25,773 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:25,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 32 [2021-12-06 23:05:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:25,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:29,588 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_130| 4))))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (or (= (* 2 c_~N~0) (+ .cse0 .cse1 .cse2 .cse3)) (not (= .cse1 2)) (not (= .cse0 2)) (not (= 2 .cse3))))))))) is different from false [2021-12-06 23:05:30,430 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_137| Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_137| 4))))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_130| 4))))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3)) (not (= 2 .cse1)) (not (= 2 .cse3)) (not (= 2 .cse2))))))))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-06 23:05:30,575 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_137| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_137| 4))))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_130| 4))))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3)) (not (= 2 .cse1)) (not (= 2 .cse3)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (= 2 .cse2)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))))))))) is different from false [2021-12-06 23:05:30,846 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_137| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_438))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select v_ArrVal_438 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_137| 4))))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_130| 4))))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3)) (not (= 2 .cse1)) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (not (= 2 .cse3)) (not (= 2 .cse2)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)))))))) is different from false [2021-12-06 23:05:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2021-12-06 23:05:31,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737659965] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:31,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 16] total 39 [2021-12-06 23:05:31,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826646340] [2021-12-06 23:05:31,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:31,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 23:05:31,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 23:05:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1069, Unknown=7, NotChecked=276, Total=1482 [2021-12-06 23:05:31,003 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 39 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:32,187 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2021-12-06 23:05:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:05:32,187 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 39 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 23:05:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:32,188 INFO L225 Difference]: With dead ends: 101 [2021-12-06 23:05:32,188 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 23:05:32,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=386, Invalid=2485, Unknown=7, NotChecked=428, Total=3306 [2021-12-06 23:05:32,190 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 662 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:32,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 131 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 399 Invalid, 0 Unknown, 662 Unchecked, 0.2s Time] [2021-12-06 23:05:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 23:05:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2021-12-06 23:05:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-12-06 23:05:32,197 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 37 [2021-12-06 23:05:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:32,197 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-12-06 23:05:32,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 39 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2021-12-06 23:05:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:05:32,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:32,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:32,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:05:32,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:32,399 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2021-12-06 23:05:32,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:32,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700492057] [2021-12-06 23:05:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:32,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:32,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:32,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749758180] [2021-12-06 23:05:32,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:32,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:32,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:32,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:05:32,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:05:32,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:32,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 23:05:32,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:32,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-06 23:05:32,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:32,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:05:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:32,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:05:32,690 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:32,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-12-06 23:05:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:05:32,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:32,825 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_149| Int) (v_ArrVal_498 (Array Int Int))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_498) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_149| 4))) 2) (< (+ |v_ULTIMATE.start_main_~i~0#1_149| 1) c_~N~0) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_149|))) is different from false [2021-12-06 23:05:32,841 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_149| Int) (v_ArrVal_498 (Array Int Int))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_498) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_149| 4))) 2) (< (+ |v_ULTIMATE.start_main_~i~0#1_149| 1) c_~N~0) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_149|))) is different from false [2021-12-06 23:05:32,962 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:32,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2021-12-06 23:05:32,968 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:32,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2021-12-06 23:05:32,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-12-06 23:05:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-06 23:05:33,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:33,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700492057] [2021-12-06 23:05:33,209 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:33,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749758180] [2021-12-06 23:05:33,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749758180] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:33,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:33,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-12-06 23:05:33,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383141052] [2021-12-06 23:05:33,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:33,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 23:05:33,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 23:05:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=796, Unknown=12, NotChecked=122, Total=1122 [2021-12-06 23:05:33,210 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:33,592 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2021-12-06 23:05:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:05:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 23:05:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:33,594 INFO L225 Difference]: With dead ends: 135 [2021-12-06 23:05:33,594 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 23:05:33,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=374, Invalid=1343, Unknown=13, NotChecked=162, Total=1892 [2021-12-06 23:05:33,595 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 168 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:33,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 66 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 432 Invalid, 0 Unknown, 218 Unchecked, 0.2s Time] [2021-12-06 23:05:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 23:05:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 111. [2021-12-06 23:05:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2636363636363637) internal successors, (139), 110 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2021-12-06 23:05:33,604 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 37 [2021-12-06 23:05:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:33,604 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2021-12-06 23:05:33,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2021-12-06 23:05:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:05:33,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:33,605 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:33,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:05:33,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:05:33,806 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2063837675, now seen corresponding path program 3 times [2021-12-06 23:05:33,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090176547] [2021-12-06 23:05:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:33,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:33,820 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986596965] [2021-12-06 23:05:33,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:05:33,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:33,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:33,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:05:33,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 23:05:33,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:33,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:05:33,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:33,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:05:33,956 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-06 23:05:33,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 23:05:34,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:34,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 23:05:34,049 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:05:34,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 23:05:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:05:34,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:34,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_553 (Array Int Int))) (let ((.cse0 (+ 2 |ULTIMATE.start_main_~i~0#1|))) (or (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (< c_~N~0 .cse0) (< .cse0 c_~N~0)))) is different from false [2021-12-06 23:05:34,314 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_169|) |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_169| 1)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2))) is different from false [2021-12-06 23:05:34,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ |v_ULTIMATE.start_main_~i~0#1_169| 1) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_169|))) is different from false [2021-12-06 23:05:34,392 INFO L354 Elim1Store]: treesize reduction 39, result has 41.8 percent of original size [2021-12-06 23:05:34,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 46 [2021-12-06 23:05:34,397 INFO L354 Elim1Store]: treesize reduction 12, result has 25.0 percent of original size [2021-12-06 23:05:34,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2021-12-06 23:05:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 10 not checked. [2021-12-06 23:05:34,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090176547] [2021-12-06 23:05:34,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986596965] [2021-12-06 23:05:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986596965] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:34,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:34,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 24 [2021-12-06 23:05:34,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305125794] [2021-12-06 23:05:34,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:34,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:05:34,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:05:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=338, Unknown=11, NotChecked=120, Total=552 [2021-12-06 23:05:34,423 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:35,121 WARN L838 $PredicateComparison]: unable to prove that (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ |v_ULTIMATE.start_main_~i~0#1_169| 1) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_169|)))) is different from false [2021-12-06 23:05:37,131 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_169|) |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_169| 1)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2)))) is different from false [2021-12-06 23:05:38,003 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ |v_ULTIMATE.start_main_~i~0#1_169| 1) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_169|))))) is different from false [2021-12-06 23:05:40,013 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (exists ((|v_ULTIMATE.start_main_~i~0#1_161| Int)) (and (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_161| 4) (- 4)))) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_161| 1)) (< |v_ULTIMATE.start_main_~i~0#1_161| c_~N~0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_169| Int) (v_ArrVal_551 Int) (v_ArrVal_553 (Array Int Int))) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_169|) |c_ULTIMATE.start_main_~i~0#1|) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_169| 1)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_551)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_169| 4))) 2)))) is different from false [2021-12-06 23:05:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:40,134 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2021-12-06 23:05:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:05:40,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 23:05:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:40,135 INFO L225 Difference]: With dead ends: 129 [2021-12-06 23:05:40,135 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 23:05:40,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=128, Invalid=485, Unknown=15, NotChecked=364, Total=992 [2021-12-06 23:05:40,137 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:40,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 47 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 131 Unchecked, 0.0s Time] [2021-12-06 23:05:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 23:05:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2021-12-06 23:05:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 116 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2021-12-06 23:05:40,147 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 147 transitions. Word has length 37 [2021-12-06 23:05:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:40,147 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-12-06 23:05:40,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 147 transitions. [2021-12-06 23:05:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 23:05:40,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:40,148 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:40,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:05:40,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 23:05:40,349 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2021-12-06 23:05:40,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:40,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55814386] [2021-12-06 23:05:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:40,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:40,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:40,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491056172] [2021-12-06 23:05:40,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:40,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:40,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:40,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:40,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 23:05:40,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:05:40,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:40,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 23:05:40,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:40,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:05:40,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:40,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:05:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:40,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:05:40,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:05:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:40,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:40,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 23:05:40,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-06 23:05:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:40,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:40,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55814386] [2021-12-06 23:05:40,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:40,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491056172] [2021-12-06 23:05:40,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491056172] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:40,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:05:40,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-06 23:05:40,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360003978] [2021-12-06 23:05:40,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:40,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:05:40,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:05:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:40,671 INFO L87 Difference]: Start difference. First operand 117 states and 147 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:40,860 INFO L93 Difference]: Finished difference Result 176 states and 227 transitions. [2021-12-06 23:05:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:05:40,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-06 23:05:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:40,861 INFO L225 Difference]: With dead ends: 176 [2021-12-06 23:05:40,861 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 23:05:40,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:05:40,862 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:40,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 23:05:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 117. [2021-12-06 23:05:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.25) internal successors, (145), 116 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2021-12-06 23:05:40,875 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 37 [2021-12-06 23:05:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:40,876 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2021-12-06 23:05:40,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2021-12-06 23:05:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 23:05:40,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:40,876 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:40,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:41,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 23:05:41,077 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2021-12-06 23:05:41,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:41,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321032536] [2021-12-06 23:05:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:41,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321032536] [2021-12-06 23:05:41,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321032536] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:41,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203666012] [2021-12-06 23:05:41,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:05:41,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:41,146 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:41,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 23:05:41,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:05:41,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:41,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:05:41,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:41,267 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203666012] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:41,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:41,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-06 23:05:41,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901748790] [2021-12-06 23:05:41,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:41,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:05:41,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:05:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:41,320 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:41,528 INFO L93 Difference]: Finished difference Result 162 states and 205 transitions. [2021-12-06 23:05:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:05:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 23:05:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:41,530 INFO L225 Difference]: With dead ends: 162 [2021-12-06 23:05:41,530 INFO L226 Difference]: Without dead ends: 141 [2021-12-06 23:05:41,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:05:41,530 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:41,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 34 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-06 23:05:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-12-06 23:05:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 104 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 131 transitions. [2021-12-06 23:05:41,539 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 131 transitions. Word has length 39 [2021-12-06 23:05:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:41,539 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 131 transitions. [2021-12-06 23:05:41,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 131 transitions. [2021-12-06 23:05:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:05:41,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:41,540 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:41,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 23:05:41,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 23:05:41,740 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2021-12-06 23:05:41,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108650614] [2021-12-06 23:05:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:41,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:41,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108650614] [2021-12-06 23:05:41,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108650614] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:41,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579796685] [2021-12-06 23:05:41,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:05:41,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:41,803 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:41,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 23:05:41,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 23:05:41,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:41,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:05:41,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579796685] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:05:41,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:05:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-06 23:05:41,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767124602] [2021-12-06 23:05:41,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:05:41,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:05:41,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:05:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:05:41,991 INFO L87 Difference]: Start difference. First operand 105 states and 131 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) [2021-12-06 23:05:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:42,116 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2021-12-06 23:05:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:05:42,117 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 40 [2021-12-06 23:05:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:42,117 INFO L225 Difference]: With dead ends: 131 [2021-12-06 23:05:42,117 INFO L226 Difference]: Without dead ends: 58 [2021-12-06 23:05:42,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:05:42,118 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 86 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:42,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 33 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-06 23:05:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-12-06 23:05:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:05:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-12-06 23:05:42,123 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 40 [2021-12-06 23:05:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:42,123 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-12-06 23:05:42,123 INFO L471 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) [2021-12-06 23:05:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-12-06 23:05:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:05:42,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:42,124 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:42,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 23:05:42,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 23:05:42,325 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2021-12-06 23:05:42,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221590890] [2021-12-06 23:05:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:42,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:05:42,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221590890] [2021-12-06 23:05:42,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221590890] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620821481] [2021-12-06 23:05:42,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:05:42,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:42,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:42,935 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:42,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 23:05:42,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:05:42,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:05:42,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 23:05:42,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:42,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:05:43,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:05:43,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:05:43,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,456 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:05:43,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2021-12-06 23:05:43,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,609 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:05:43,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 57 [2021-12-06 23:05:43,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:43,809 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:05:43,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2021-12-06 23:05:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:05:44,118 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:05:44,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 40 [2021-12-06 23:05:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:05:44,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:58,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_789 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_789))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_789 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_241| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (= (* 2 c_~N~0) (+ .cse2 .cse3 .cse0 .cse1 .cse4)) (not (= 2 .cse3)) (not (= .cse2 2)))))))))) is different from false [2021-12-06 23:06:02,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_789 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (|v_ULTIMATE.start_main_~i~0#1_251| Int) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_789))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_789 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4)))) (.cse3 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_241| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3 .cse4)) (not (= .cse0 2)) (not (= 2 .cse4)) (not (= 2 .cse2)) (not (= .cse1 2)))))))))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-06 23:06:03,235 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_789 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (|v_ULTIMATE.start_main_~i~0#1_251| Int) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_789))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_789 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4)))) (.cse3 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_241| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3 .cse4)) (not (= .cse0 2)) (not (= 2 .cse4)) (not (= 2 .cse2)) (not (= .cse1 2)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))))))) is different from false [2021-12-06 23:06:04,286 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_789 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (|v_ULTIMATE.start_main_~i~0#1_251| Int) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_789))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_789 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4)))) (.cse3 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_241| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3 .cse4)) (not (= .cse0 2)) (not (= 2 .cse4)) (not (= 2 .cse2)) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (not (= .cse1 2)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0))))))))) is different from false [2021-12-06 23:06:05,245 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_789 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_241| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_243| Int) (|v_ULTIMATE.start_main_~i~0#1_251| Int) (|v_ULTIMATE.start_main_~i~0#1_239| Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_789))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_789 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_251| 4)))) (.cse3 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_243| 4))))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_241| 4))))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_239| 4))))) (or (= (* 2 ~N~0) (+ .cse0 .cse1 .cse2 .cse3 .cse4)) (not (= .cse0 2)) (<= ~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (not (= 2 .cse4)) (not (= 2 .cse2)) (not (= .cse1 2)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) ~N~0))))))))) is different from false [2021-12-06 23:06:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 23 not checked. [2021-12-06 23:06:05,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620821481] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:05,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:06:05,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 19] total 54 [2021-12-06 23:06:05,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908952567] [2021-12-06 23:06:05,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:05,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-06 23:06:05,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-06 23:06:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2158, Unknown=12, NotChecked=490, Total=2862 [2021-12-06 23:06:05,776 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 54 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:08,552 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2021-12-06 23:06:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 23:06:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 23:06:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:08,553 INFO L225 Difference]: With dead ends: 130 [2021-12-06 23:06:08,553 INFO L226 Difference]: Without dead ends: 126 [2021-12-06 23:06:08,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 72 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=542, Invalid=4158, Unknown=12, NotChecked=690, Total=5402 [2021-12-06 23:06:08,555 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 930 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:08,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 216 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 688 Invalid, 0 Unknown, 930 Unchecked, 0.4s Time] [2021-12-06 23:06:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-06 23:06:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2021-12-06 23:06:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 111 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 140 transitions. [2021-12-06 23:06:08,566 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 140 transitions. Word has length 45 [2021-12-06 23:06:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:08,566 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 140 transitions. [2021-12-06 23:06:08,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 140 transitions. [2021-12-06 23:06:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:06:08,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:08,566 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:08,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 23:06:08,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:08,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:06:08,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2054602352, now seen corresponding path program 4 times [2021-12-06 23:06:08,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:08,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974062239] [2021-12-06 23:06:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:08,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:08,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:06:08,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032407952] [2021-12-06 23:06:08,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:06:08,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:08,812 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:08,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 23:06:08,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:06:08,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:06:08,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 23:06:08,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:08,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-06 23:06:09,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:06:09,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:06:09,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:06:09,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:06:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:06:09,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:06:09,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:06:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:06:09,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:09,159 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_864 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) is different from false [2021-12-06 23:06:09,164 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_864 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:06:09,172 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_864 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:06:09,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_864 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_864) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) is different from false [2021-12-06 23:06:09,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:09,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2021-12-06 23:06:09,222 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:09,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 23:06:09,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:06:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 22 not checked. [2021-12-06 23:06:09,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:09,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974062239] [2021-12-06 23:06:09,330 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:06:09,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032407952] [2021-12-06 23:06:09,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032407952] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:09,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:09,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-12-06 23:06:09,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927922749] [2021-12-06 23:06:09,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:09,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 23:06:09,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 23:06:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=421, Unknown=4, NotChecked=180, Total=702 [2021-12-06 23:06:09,331 INFO L87 Difference]: Start difference. First operand 112 states and 140 transitions. Second operand has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:09,704 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2021-12-06 23:06:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:06:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 23:06:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:09,705 INFO L225 Difference]: With dead ends: 176 [2021-12-06 23:06:09,705 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 23:06:09,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=495, Unknown=4, NotChecked=196, Total=812 [2021-12-06 23:06:09,706 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 88 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 312 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:09,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 91 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 564 Invalid, 0 Unknown, 312 Unchecked, 0.3s Time] [2021-12-06 23:06:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 23:06:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 142. [2021-12-06 23:06:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.2624113475177305) internal successors, (178), 141 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2021-12-06 23:06:09,721 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 45 [2021-12-06 23:06:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:09,721 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2021-12-06 23:06:09,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:09,721 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2021-12-06 23:06:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:06:09,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:09,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:09,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 23:06:09,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:09,923 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:06:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1431802284, now seen corresponding path program 5 times [2021-12-06 23:06:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:09,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562592233] [2021-12-06 23:06:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:09,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:09,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:06:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716364757] [2021-12-06 23:06:09,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:06:09,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:09,956 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:09,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 23:06:10,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:06:10,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:06:10,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 23:06:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:10,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:06:10,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:06:10,142 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:06:10,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:06:10,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:06:10,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:06:10,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:06:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:06:10,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:10,259 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_934 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) is different from false [2021-12-06 23:06:10,266 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_934 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:06:10,274 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_934 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) is different from false [2021-12-06 23:06:10,284 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_934 (Array Int Int)) (v_ArrVal_931 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_931)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2)) is different from false [2021-12-06 23:06:10,298 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_288| Int)) (or (forall ((v_ArrVal_934 (Array Int Int)) (v_ArrVal_931 Int)) (= 2 (select (select (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|) (+ (* |v_ULTIMATE.start_main_~i~0#1_288| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_931)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_288| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:06:10,354 INFO L354 Elim1Store]: treesize reduction 37, result has 42.2 percent of original size [2021-12-06 23:06:10,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2021-12-06 23:06:10,359 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:10,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 23:06:10,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:06:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 22 not checked. [2021-12-06 23:06:10,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562592233] [2021-12-06 23:06:10,409 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:06:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716364757] [2021-12-06 23:06:10,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716364757] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:10,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:10,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2021-12-06 23:06:10,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969627877] [2021-12-06 23:06:10,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:10,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 23:06:10,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 23:06:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=253, Unknown=5, NotChecked=180, Total=506 [2021-12-06 23:06:10,410 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:12,496 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 2 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_288| Int)) (or (forall ((v_ArrVal_934 (Array Int Int)) (v_ArrVal_931 Int)) (= 2 (select (select (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|) (+ (* |v_ULTIMATE.start_main_~i~0#1_288| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_931)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_288| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:06:14,521 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_934 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (forall ((|v_ULTIMATE.start_main_~i~0#1_288| Int)) (or (forall ((v_ArrVal_934 (Array Int Int)) (v_ArrVal_931 Int)) (= 2 (select (select (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|) (+ (* |v_ULTIMATE.start_main_~i~0#1_288| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_931)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_934) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_288| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= 3 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-06 23:06:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:14,739 INFO L93 Difference]: Finished difference Result 264 states and 344 transitions. [2021-12-06 23:06:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:06:14,740 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 23:06:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:14,741 INFO L225 Difference]: With dead ends: 264 [2021-12-06 23:06:14,741 INFO L226 Difference]: Without dead ends: 238 [2021-12-06 23:06:14,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=93, Invalid=348, Unknown=7, NotChecked=308, Total=756 [2021-12-06 23:06:14,742 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 396 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:14,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 93 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 422 Invalid, 0 Unknown, 396 Unchecked, 0.2s Time] [2021-12-06 23:06:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-06 23:06:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2021-12-06 23:06:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.2829268292682927) internal successors, (263), 205 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 263 transitions. [2021-12-06 23:06:14,766 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 263 transitions. Word has length 45 [2021-12-06 23:06:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 263 transitions. [2021-12-06 23:06:14,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 263 transitions. [2021-12-06 23:06:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:06:14,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:14,767 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:14,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 23:06:14,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:14,968 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:06:14,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1853695216, now seen corresponding path program 6 times [2021-12-06 23:06:14,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:14,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328443898] [2021-12-06 23:06:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:14,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:15,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:06:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641320526] [2021-12-06 23:06:15,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:06:15,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:15,007 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:15,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 23:06:15,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 23:06:15,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:06:15,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 23:06:15,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:15,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:06:15,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:06:15,208 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:06:15,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:06:15,237 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-12-06 23:06:15,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 23:06:15,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 23:06:15,356 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-12-06 23:06:15,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2021-12-06 23:06:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:06:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:15,527 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) (<= c_~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:06:15,538 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (<= c_~N~0 3)) is different from false [2021-12-06 23:06:15,544 WARN L838 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main_~i~0#1| 3) (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) is different from false [2021-12-06 23:06:15,549 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2)) is different from false [2021-12-06 23:06:15,560 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 2) (forall ((v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1003 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) is different from false [2021-12-06 23:06:15,590 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1001 Int) (v_ArrVal_1003 Int)) (or (<= |v_ULTIMATE.start_main_~i~0#1_310| 2) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1001) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_310| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2))) is different from false [2021-12-06 23:06:15,632 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_311| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1001 Int) (v_ArrVal_1003 Int)) (or (<= |v_ULTIMATE.start_main_~i~0#1_310| 2) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_311| 4)) v_ArrVal_1001) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_310| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (< |v_ULTIMATE.start_main_~i~0#1_311| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:06:15,735 INFO L354 Elim1Store]: treesize reduction 104, result has 35.4 percent of original size [2021-12-06 23:06:15,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 73 [2021-12-06 23:06:15,753 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-12-06 23:06:15,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 66 [2021-12-06 23:06:15,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:06:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 25 not checked. [2021-12-06 23:06:15,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328443898] [2021-12-06 23:06:15,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:06:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641320526] [2021-12-06 23:06:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641320526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:15,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:15,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2021-12-06 23:06:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425997907] [2021-12-06 23:06:15,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:15,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 23:06:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:15,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 23:06:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=535, Unknown=7, NotChecked=378, Total=1056 [2021-12-06 23:06:15,809 INFO L87 Difference]: Start difference. First operand 206 states and 263 transitions. Second operand has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:17,905 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~i~0#1| 1) (forall ((|v_ULTIMATE.start_main_~i~0#1_311| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1001 Int) (v_ArrVal_1003 Int)) (or (<= |v_ULTIMATE.start_main_~i~0#1_310| 2) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_311| 4)) v_ArrVal_1001) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_310| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (< |v_ULTIMATE.start_main_~i~0#1_311| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:06:19,934 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 2) (forall ((v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1003 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_311| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1001 Int) (v_ArrVal_1003 Int)) (or (<= |v_ULTIMATE.start_main_~i~0#1_310| 2) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_311| 4)) v_ArrVal_1001) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_310| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (< |v_ULTIMATE.start_main_~i~0#1_311| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-06 23:06:21,939 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 2) (forall ((v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1003 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1001 Int) (v_ArrVal_1003 Int)) (or (<= |v_ULTIMATE.start_main_~i~0#1_310| 2) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1001) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_310| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) is different from false [2021-12-06 23:06:23,944 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 2) (forall ((v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1003 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) (or (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2) (= (* 4 |c_ULTIMATE.start_main_~i~0#1|) 4)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (<= |c_ULTIMATE.start_main_~i~0#1| 2))) is different from false [2021-12-06 23:06:25,948 WARN L838 $PredicateComparison]: unable to prove that (and (or (<= |c_ULTIMATE.start_main_~i~0#1| 3) (forall ((v_ArrVal_1004 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (forall ((|ULTIMATE.start_main_~i~0#1| Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 2) (forall ((v_ArrVal_1004 (Array Int Int)) (v_ArrVal_1003 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1003)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1004) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2)))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or (<= |c_ULTIMATE.start_main_~i~0#1| 2) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 2))) is different from false [2021-12-06 23:06:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:06:26,205 INFO L93 Difference]: Finished difference Result 242 states and 304 transitions. [2021-12-06 23:06:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 23:06:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 23:06:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:06:26,207 INFO L225 Difference]: With dead ends: 242 [2021-12-06 23:06:26,207 INFO L226 Difference]: Without dead ends: 224 [2021-12-06 23:06:26,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=247, Invalid=911, Unknown=12, NotChecked=900, Total=2070 [2021-12-06 23:06:26,208 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:06:26,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 86 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 396 Invalid, 0 Unknown, 391 Unchecked, 0.2s Time] [2021-12-06 23:06:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-06 23:06:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2021-12-06 23:06:26,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2718446601941749) internal successors, (262), 206 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 262 transitions. [2021-12-06 23:06:26,229 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 262 transitions. Word has length 45 [2021-12-06 23:06:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:06:26,230 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 262 transitions. [2021-12-06 23:06:26,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:06:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 262 transitions. [2021-12-06 23:06:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:06:26,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:06:26,230 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:06:26,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 23:06:26,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:26,431 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:06:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:06:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1422716494, now seen corresponding path program 3 times [2021-12-06 23:06:26,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:06:26,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309144127] [2021-12-06 23:06:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:06:26,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:06:26,451 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:06:26,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097085668] [2021-12-06 23:06:26,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:06:26,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:06:26,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:06:26,453 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:06:26,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 23:06:26,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 23:06:26,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:06:26,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 23:06:26,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:06:26,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 23:06:26,684 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-12-06 23:06:26,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 23:06:26,735 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-06 23:06:26,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2021-12-06 23:06:26,822 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-06 23:06:26,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 38 [2021-12-06 23:06:26,947 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:06:26,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2021-12-06 23:06:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 27 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:06:27,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:06:58,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-12-06 23:06:58,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 198 [2021-12-06 23:06:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 20 refuted. 2 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:06:58,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:06:58,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309144127] [2021-12-06 23:06:58,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:06:58,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097085668] [2021-12-06 23:06:58,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097085668] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:06:58,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:06:58,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 36 [2021-12-06 23:06:58,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445193602] [2021-12-06 23:06:58,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:06:58,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 23:06:58,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:06:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 23:06:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=938, Unknown=17, NotChecked=0, Total=1260 [2021-12-06 23:06:58,803 INFO L87 Difference]: Start difference. First operand 207 states and 262 transitions. Second operand has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 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) [2021-12-06 23:07:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:28,506 INFO L93 Difference]: Finished difference Result 310 states and 392 transitions. [2021-12-06 23:07:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 23:07:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 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 45 [2021-12-06 23:07:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:28,507 INFO L225 Difference]: With dead ends: 310 [2021-12-06 23:07:28,507 INFO L226 Difference]: Without dead ends: 219 [2021-12-06 23:07:28,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 60.9s TimeCoverageRelationStatistics Valid=681, Invalid=2580, Unknown=45, NotChecked=0, Total=3306 [2021-12-06 23:07:28,509 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 98 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:28,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 38 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 151 Invalid, 0 Unknown, 170 Unchecked, 0.1s Time] [2021-12-06 23:07:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-12-06 23:07:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2021-12-06 23:07:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.2616822429906542) internal successors, (270), 214 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:28,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2021-12-06 23:07:28,531 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 45 [2021-12-06 23:07:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:28,531 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2021-12-06 23:07:28,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 36 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) [2021-12-06 23:07:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2021-12-06 23:07:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 23:07:28,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:28,532 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:28,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 23:07:28,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 23:07:28,733 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:07:28,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1510143892, now seen corresponding path program 11 times [2021-12-06 23:07:28,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948097799] [2021-12-06 23:07:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:28,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:07:28,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:28,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948097799] [2021-12-06 23:07:28,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948097799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:28,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897303938] [2021-12-06 23:07:28,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:07:28,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:28,846 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:28,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 23:07:28,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 23:07:28,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:28,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:07:28,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:07:29,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:07:29,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897303938] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:29,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:29,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-12-06 23:07:29,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301692865] [2021-12-06 23:07:29,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:29,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:07:29,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:07:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:07:29,156 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:29,515 INFO L93 Difference]: Finished difference Result 265 states and 337 transitions. [2021-12-06 23:07:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:07:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2021-12-06 23:07:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:29,517 INFO L225 Difference]: With dead ends: 265 [2021-12-06 23:07:29,517 INFO L226 Difference]: Without dead ends: 246 [2021-12-06 23:07:29,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:07:29,518 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 108 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 28 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:07:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-06 23:07:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 199. [2021-12-06 23:07:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.2777777777777777) internal successors, (253), 198 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2021-12-06 23:07:29,541 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 47 [2021-12-06 23:07:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:29,542 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2021-12-06 23:07:29,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.7) internal successors, (74), 20 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2021-12-06 23:07:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 23:07:29,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:29,542 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:29,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 23:07:29,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 23:07:29,743 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:07:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash -220752601, now seen corresponding path program 12 times [2021-12-06 23:07:29,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:29,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394687517] [2021-12-06 23:07:29,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:29,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 23:07:29,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:29,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394687517] [2021-12-06 23:07:29,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394687517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:29,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11754358] [2021-12-06 23:07:29,885 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:07:29,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:29,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:29,886 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:29,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 23:07:29,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 23:07:29,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:07:29,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:07:29,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:07:30,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:07:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:07:30,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11754358] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:07:30,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:07:30,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-12-06 23:07:30,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166969540] [2021-12-06 23:07:30,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:07:30,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:07:30,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:07:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:07:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:07:30,167 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 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) [2021-12-06 23:07:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:07:30,377 INFO L93 Difference]: Finished difference Result 243 states and 305 transitions. [2021-12-06 23:07:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:07:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 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 48 [2021-12-06 23:07:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:07:30,378 INFO L225 Difference]: With dead ends: 243 [2021-12-06 23:07:30,378 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 23:07:30,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-12-06 23:07:30,379 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 112 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:07:30,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 31 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:07:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 23:07:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2021-12-06 23:07:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:07:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-12-06 23:07:30,389 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 48 [2021-12-06 23:07:30,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:07:30,389 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-12-06 23:07:30,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 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) [2021-12-06 23:07:30,389 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-12-06 23:07:30,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:07:30,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:07:30,390 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:07:30,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 23:07:30,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 23:07:30,590 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:07:30,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:07:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 663114381, now seen corresponding path program 13 times [2021-12-06 23:07:30,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:07:30,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636207146] [2021-12-06 23:07:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:07:30,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:07:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 23:07:31,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:07:31,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636207146] [2021-12-06 23:07:31,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636207146] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:07:31,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862351186] [2021-12-06 23:07:31,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:07:31,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:07:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:07:31,167 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:07:31,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 23:07:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:07:31,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 23:07:31,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:07:31,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:07:31,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:07:31,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:07:31,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:07:31,630 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:07:31,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2021-12-06 23:07:31,778 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:07:31,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:07:31,930 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:07:31,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:07:32,078 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:07:32,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:07:32,200 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:07:32,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 30 [2021-12-06 23:07:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:07:32,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:31,013 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse1 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= 2 .cse0)) (not (= .cse1 2)) (not (= 2 .cse2)) (not (= .cse3 2)) (= (* 2 c_~N~0) (+ .cse1 .cse3 .cse4 .cse0 .cse5 .cse2)) (not (= 2 .cse5))))))))))) is different from false [2021-12-06 23:08:48,415 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (|v_ULTIMATE.start_main_~i~0#1_409| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= 2 .cse2)) (= (* 2 ~N~0) (+ .cse1 .cse0 .cse3 .cse4 .cse2 .cse5)) (not (= 2 .cse5)) (not (= .cse3 2))))))))))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-06 23:08:50,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (|v_ULTIMATE.start_main_~i~0#1_409| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= 2 .cse2)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (= (* 2 ~N~0) (+ .cse1 .cse0 .cse3 .cse4 .cse2 .cse5)) (not (= 2 .cse5)) (not (= .cse3 2)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))))))))))) is different from false [2021-12-06 23:08:54,148 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (|v_ULTIMATE.start_main_~i~0#1_409| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= 2 .cse2)) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (* 2 ~N~0) (+ .cse1 .cse0 .cse3 .cse4 .cse2 .cse5)) (not (= 2 .cse5)) (not (= .cse3 2)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)))))))))) is different from false [2021-12-06 23:08:58,440 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (|v_ULTIMATE.start_main_~i~0#1_409| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= 2 .cse2)) (<= ~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (= (* 2 ~N~0) (+ .cse1 .cse0 .cse3 .cse4 .cse2 .cse5)) (not (= 2 .cse5)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) ~N~0) (not (= .cse3 2))))))))))) is different from false [2021-12-06 23:09:03,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_400| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_396| Int) (|v_ULTIMATE.start_main_~i~0#1_398| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_394| Int) (|v_ULTIMATE.start_main_~i~0#1_409| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1293))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1293 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)))) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_400| 4))))) (let ((.cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_398| 4))))) (let ((.cse3 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_396| 4))))) (let ((.cse0 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4 .cse2 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_394| 4))))) (or (not (= .cse0 2)) (not (= .cse1 2)) (not (= 2 .cse2)) (= (* 2 ~N~0) (+ .cse1 .cse0 .cse3 .cse4 .cse2 .cse5)) (not (= 2 .cse5)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 4)) (not (= .cse3 2)) (< (+ 5 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)))))))))) is different from false [2021-12-06 23:09:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 34 not checked. [2021-12-06 23:09:05,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862351186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:05,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:09:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 22] total 57 [2021-12-06 23:09:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108530242] [2021-12-06 23:09:05,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-06 23:09:05,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-06 23:09:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2350, Unknown=32, NotChecked=618, Total=3192 [2021-12-06 23:09:05,751 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:33,907 WARN L227 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:09:48,124 WARN L227 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:09:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:48,236 INFO L93 Difference]: Finished difference Result 245 states and 315 transitions. [2021-12-06 23:09:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 23:09:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 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 53 [2021-12-06 23:09:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:48,238 INFO L225 Difference]: With dead ends: 245 [2021-12-06 23:09:48,238 INFO L226 Difference]: Without dead ends: 240 [2021-12-06 23:09:48,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 84 SyntacticMatches, 12 SemanticMatches, 85 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=614, Invalid=5849, Unknown=41, NotChecked=978, Total=7482 [2021-12-06 23:09:48,240 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1255 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:48,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 218 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 701 Invalid, 0 Unknown, 1255 Unchecked, 0.4s Time] [2021-12-06 23:09:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-06 23:09:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 222. [2021-12-06 23:09:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.2805429864253393) internal successors, (283), 221 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 283 transitions. [2021-12-06 23:09:48,269 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 283 transitions. Word has length 53 [2021-12-06 23:09:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:48,269 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 283 transitions. [2021-12-06 23:09:48,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.7543859649122806) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 283 transitions. [2021-12-06 23:09:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:09:48,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:48,270 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:48,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 23:09:48,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 23:09:48,471 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 720372683, now seen corresponding path program 7 times [2021-12-06 23:09:48,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:48,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250169528] [2021-12-06 23:09:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:48,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:48,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:09:48,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332185850] [2021-12-06 23:09:48,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:09:48,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:48,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:48,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:48,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 23:09:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:09:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 23:09:48,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:48,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:09:48,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-12-06 23:09:48,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:48,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:48,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:48,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:48,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:09:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:09:48,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:48,869 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 2)) is different from false [2021-12-06 23:09:48,876 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:09:48,887 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:09:48,897 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:09:48,906 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1385 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1385) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) is different from false [2021-12-06 23:09:48,943 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:48,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 31 [2021-12-06 23:09:48,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:48,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2021-12-06 23:09:48,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:09:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 25 trivial. 35 not checked. [2021-12-06 23:09:49,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250169528] [2021-12-06 23:09:49,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:09:49,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332185850] [2021-12-06 23:09:49,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332185850] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:49,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:09:49,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2021-12-06 23:09:49,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475417049] [2021-12-06 23:09:49,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:49,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 23:09:49,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 23:09:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=319, Unknown=5, NotChecked=200, Total=600 [2021-12-06 23:09:49,005 INFO L87 Difference]: Start difference. First operand 222 states and 283 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:49,478 INFO L93 Difference]: Finished difference Result 316 states and 404 transitions. [2021-12-06 23:09:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:09:49,478 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 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 53 [2021-12-06 23:09:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:49,480 INFO L225 Difference]: With dead ends: 316 [2021-12-06 23:09:49,480 INFO L226 Difference]: Without dead ends: 309 [2021-12-06 23:09:49,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=419, Unknown=5, NotChecked=230, Total=756 [2021-12-06 23:09:49,480 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:49,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 114 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 644 Invalid, 0 Unknown, 295 Unchecked, 0.3s Time] [2021-12-06 23:09:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-12-06 23:09:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 279. [2021-12-06 23:09:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.2697841726618706) internal successors, (353), 278 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 353 transitions. [2021-12-06 23:09:49,515 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 353 transitions. Word has length 53 [2021-12-06 23:09:49,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:49,515 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 353 transitions. [2021-12-06 23:09:49,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 353 transitions. [2021-12-06 23:09:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:09:49,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:49,516 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:49,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 23:09:49,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:49,717 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:49,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1343172751, now seen corresponding path program 8 times [2021-12-06 23:09:49,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:49,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898219802] [2021-12-06 23:09:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:49,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:49,757 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:09:49,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994504120] [2021-12-06 23:09:49,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:09:49,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:49,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:49,759 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:49,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 23:09:49,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:09:49,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:49,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-06 23:09:49,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:49,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:09:49,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:09:49,950 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:09:49,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:09:49,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:50,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:50,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:09:50,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:09:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 23:09:50,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:50,099 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) is different from false [2021-12-06 23:09:50,105 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:09:50,113 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:09:50,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 2)) is different from false [2021-12-06 23:09:50,129 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int)) (v_ArrVal_1465 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_1465)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 2)) is different from false [2021-12-06 23:09:50,145 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_455| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_455| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_1468 (Array Int Int)) (v_ArrVal_1465 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_455| 4)) v_ArrVal_1465)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))))) is different from false [2021-12-06 23:09:52,213 INFO L354 Elim1Store]: treesize reduction 37, result has 42.2 percent of original size [2021-12-06 23:09:52,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2021-12-06 23:09:52,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:09:52,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 23:09:52,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:09:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 35 not checked. [2021-12-06 23:09:52,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898219802] [2021-12-06 23:09:52,267 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:09:52,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994504120] [2021-12-06 23:09:52,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994504120] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:52,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:09:52,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2021-12-06 23:09:52,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97771787] [2021-12-06 23:09:52,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:52,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:09:52,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:09:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=320, Unknown=6, NotChecked=246, Total=650 [2021-12-06 23:09:52,268 INFO L87 Difference]: Start difference. First operand 279 states and 353 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) [2021-12-06 23:09:54,400 WARN L838 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_main_~i~0#1|) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_455| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_455| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_1468 (Array Int Int)) (v_ArrVal_1465 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_455| 4)) v_ArrVal_1465)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:09:56,440 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) (forall ((v_ArrVal_1468 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 2)) (forall ((|v_ULTIMATE.start_main_~i~0#1_455| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_455| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_1468 (Array Int Int)) (v_ArrVal_1465 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_455| 4)) v_ArrVal_1465)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1468) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))))) (<= 4 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-06 23:09:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:56,767 INFO L93 Difference]: Finished difference Result 429 states and 557 transitions. [2021-12-06 23:09:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:09:56,768 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) Word has length 53 [2021-12-06 23:09:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:56,770 INFO L225 Difference]: With dead ends: 429 [2021-12-06 23:09:56,770 INFO L226 Difference]: Without dead ends: 399 [2021-12-06 23:09:56,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=99, Invalid=387, Unknown=8, NotChecked=376, Total=870 [2021-12-06 23:09:56,770 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:56,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 100 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 544 Invalid, 0 Unknown, 395 Unchecked, 0.3s Time] [2021-12-06 23:09:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-06 23:09:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358. [2021-12-06 23:09:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.2745098039215685) internal successors, (455), 357 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 455 transitions. [2021-12-06 23:09:56,817 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 455 transitions. Word has length 53 [2021-12-06 23:09:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:56,817 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 455 transitions. [2021-12-06 23:09:56,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 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) [2021-12-06 23:09:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 455 transitions. [2021-12-06 23:09:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:09:56,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:09:56,818 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:56,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 23:09:57,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 23:09:57,019 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:09:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:09:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1405212365, now seen corresponding path program 4 times [2021-12-06 23:09:57,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:09:57,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357410105] [2021-12-06 23:09:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:09:57,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:09:57,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:09:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151984743] [2021-12-06 23:09:57,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:09:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:09:57,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:09:57,030 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:09:57,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 23:09:57,099 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:09:57,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:09:57,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 23:09:57,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:09:57,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 23:09:57,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:57,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:09:57,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:57,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:09:57,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:57,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:09:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:09:57,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:09:57,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 23:09:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:09:57,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:09:59,475 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_486| Int)) (or (forall ((v_ArrVal_1546 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_486| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1546) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 1)) (< |v_ULTIMATE.start_main_~i~0#1_486| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:09:59,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-12-06 23:09:59,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 170 [2021-12-06 23:09:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 37 trivial. 4 not checked. [2021-12-06 23:09:59,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357410105] [2021-12-06 23:09:59,552 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:09:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151984743] [2021-12-06 23:09:59,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151984743] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:59,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:09:59,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-12-06 23:09:59,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648769050] [2021-12-06 23:09:59,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:59,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:09:59,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:09:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=432, Unknown=1, NotChecked=42, Total=552 [2021-12-06 23:09:59,554 INFO L87 Difference]: Start difference. First operand 358 states and 455 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:01,643 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 1) (= 3 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_486| Int)) (or (forall ((v_ArrVal_1546 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_486| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_1546) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 1)) (< |v_ULTIMATE.start_main_~i~0#1_486| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-06 23:10:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:01,933 INFO L93 Difference]: Finished difference Result 451 states and 578 transitions. [2021-12-06 23:10:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:10:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 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 53 [2021-12-06 23:10:01,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:01,935 INFO L225 Difference]: With dead ends: 451 [2021-12-06 23:10:01,935 INFO L226 Difference]: Without dead ends: 252 [2021-12-06 23:10:01,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=110, Invalid=652, Unknown=2, NotChecked=106, Total=870 [2021-12-06 23:10:01,936 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:01,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 96 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 573 Invalid, 0 Unknown, 89 Unchecked, 0.3s Time] [2021-12-06 23:10:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-06 23:10:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2021-12-06 23:10:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.2591093117408907) internal successors, (311), 247 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 311 transitions. [2021-12-06 23:10:01,968 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 311 transitions. Word has length 53 [2021-12-06 23:10:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:01,968 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 311 transitions. [2021-12-06 23:10:01,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 311 transitions. [2021-12-06 23:10:01,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 23:10:01,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:01,969 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:01,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 23:10:02,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 23:10:02,170 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:10:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash 783767503, now seen corresponding path program 14 times [2021-12-06 23:10:02,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:02,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964887131] [2021-12-06 23:10:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:02,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:10:02,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964887131] [2021-12-06 23:10:02,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964887131] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668431941] [2021-12-06 23:10:02,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:10:02,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:02,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:02,337 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:02,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 23:10:02,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:10:02,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:02,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:10:02,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:10:02,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:10:02,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668431941] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:02,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:02,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2021-12-06 23:10:02,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649918585] [2021-12-06 23:10:02,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:02,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 23:10:02,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 23:10:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:10:02,676 INFO L87 Difference]: Start difference. First operand 248 states and 311 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:03,200 INFO L93 Difference]: Finished difference Result 293 states and 373 transitions. [2021-12-06 23:10:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 23:10:03,200 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-06 23:10:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:03,202 INFO L225 Difference]: With dead ends: 293 [2021-12-06 23:10:03,202 INFO L226 Difference]: Without dead ends: 271 [2021-12-06 23:10:03,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 23:10:03,203 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 149 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:03,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 37 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:10:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-06 23:10:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 224. [2021-12-06 23:10:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 223 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 284 transitions. [2021-12-06 23:10:03,231 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 284 transitions. Word has length 55 [2021-12-06 23:10:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:03,232 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 284 transitions. [2021-12-06 23:10:03,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 284 transitions. [2021-12-06 23:10:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 23:10:03,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:03,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:03,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-06 23:10:03,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:03,433 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:10:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -469998324, now seen corresponding path program 15 times [2021-12-06 23:10:03,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263475509] [2021-12-06 23:10:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:03,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 23:10:03,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263475509] [2021-12-06 23:10:03,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263475509] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547641102] [2021-12-06 23:10:03,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:10:03,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:03,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:03,609 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:03,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 23:10:03,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 23:10:03,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:03,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:10:03,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:10:03,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:10:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 23:10:04,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547641102] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:10:04,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:10:04,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2021-12-06 23:10:04,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309963087] [2021-12-06 23:10:04,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:10:04,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 23:10:04,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:10:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 23:10:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:10:04,014 INFO L87 Difference]: Start difference. First operand 224 states and 284 transitions. Second operand has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:10:04,257 INFO L93 Difference]: Finished difference Result 269 states and 338 transitions. [2021-12-06 23:10:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:10:04,257 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2021-12-06 23:10:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:10:04,258 INFO L225 Difference]: With dead ends: 269 [2021-12-06 23:10:04,258 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 23:10:04,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:10:04,258 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 122 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:10:04,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 44 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:10:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 23:10:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 96. [2021-12-06 23:10:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-12-06 23:10:04,268 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 56 [2021-12-06 23:10:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:10:04,268 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-12-06 23:10:04,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.739130434782609) internal successors, (86), 23 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:10:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-12-06 23:10:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:10:04,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:10:04,269 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:10:04,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 23:10:04,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:04,470 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:10:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:10:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -844503370, now seen corresponding path program 16 times [2021-12-06 23:10:04,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:10:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398626066] [2021-12-06 23:10:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:10:04,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:10:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:10:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-06 23:10:05,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:10:05,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398626066] [2021-12-06 23:10:05,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398626066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:10:05,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250935017] [2021-12-06 23:10:05,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:10:05,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:10:05,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:10:05,572 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:10:05,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 23:10:05,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:10:05,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:10:05,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 86 conjunts are in the unsatisfiable core [2021-12-06 23:10:05,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:10:05,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:10:05,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:05,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:05,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:05,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:05,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:05,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:05,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:05,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:05,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:05,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:10:06,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:10:06,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,617 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:10:06,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 23:10:06,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:06,848 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:10:06,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:10:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:07,076 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:10:07,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:10:07,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:07,344 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:10:07,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 60 [2021-12-06 23:10:07,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:07,765 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:10:07,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 58 [2021-12-06 23:10:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:10:08,189 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:10:08,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 40 [2021-12-06 23:10:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:10:08,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:11:37,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse1 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse2 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0 .cse1 .cse2 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= 2 .cse0)) (not (= 2 .cse1)) (not (= 2 .cse2)) (not (= .cse3 2)) (= (* 2 c_~N~0) (+ .cse4 .cse3 .cse0 .cse1 .cse2 .cse5 .cse6)) (not (= 2 .cse5)) (not (= .cse4 2)))))))))))) is different from false [2021-12-06 23:14:39,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (not (= .cse4 2)) (not (= .cse3 2)) (not (= 2 .cse5)))))))))))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-06 23:14:54,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (not (= .cse4 2)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (= .cse3 2)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (not (= 2 .cse5)))))))))))) is different from false [2021-12-06 23:15:30,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (not (= .cse4 2)) (not (= .cse3 2)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (= 2 .cse5)))))))))))) is different from false [2021-12-06 23:16:13,468 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (<= ~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (not (= .cse4 2)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) ~N~0) (not (= .cse3 2)) (not (= 2 .cse5)))))))))))) is different from false [2021-12-06 23:17:03,201 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (not (= .cse4 2)) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 4)) (not (= .cse3 2)) (< (+ 5 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (= 2 .cse5)))))))))))) is different from false [2021-12-06 23:17:52,418 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_555| Int) (|v_ULTIMATE.start_main_~i~0#1_561| Int) (|v_ULTIMATE.start_main_~i~0#1_563| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_573| Int) (v_ArrVal_1808 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_557| Int) (|v_ULTIMATE.start_main_~i~0#1_559| Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_1808))) (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select v_ArrVal_1808 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_573| 4)))) (.cse6 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_563| 4))))) (let ((.cse3 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_561| 4))))) (let ((.cse2 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_559| 4))))) (let ((.cse5 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_557| 4))))) (let ((.cse0 (select (select (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse2 .cse1 .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_555| 4))))) (or (not (= .cse0 2)) (not (= 2 .cse1)) (not (= .cse2 2)) (<= ~N~0 (+ 5 |c_ULTIMATE.start_main_~i~0#1|)) (= (* 2 ~N~0) (+ .cse3 .cse4 .cse0 .cse2 .cse1 .cse5 .cse6)) (not (= .cse4 2)) (not (= .cse3 2)) (< (+ 6 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (not (= 2 .cse5)))))))))))) is different from false [2021-12-06 23:18:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 47 not checked. [2021-12-06 23:18:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250935017] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:17,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:18:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 25] total 75 [2021-12-06 23:18:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334827972] [2021-12-06 23:18:17,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:17,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-12-06 23:18:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-12-06 23:18:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4269, Unknown=34, NotChecked=966, Total=5550 [2021-12-06 23:18:17,819 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 75 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 75 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:52,625 INFO L93 Difference]: Finished difference Result 258 states and 328 transitions. [2021-12-06 23:18:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 23:18:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 75 states have internal predecessors, (131), 0 states have call successors, (0), 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 61 [2021-12-06 23:18:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:52,627 INFO L225 Difference]: With dead ends: 258 [2021-12-06 23:18:52,627 INFO L226 Difference]: Without dead ends: 254 [2021-12-06 23:18:52,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 92 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 2527 ImplicationChecksByTransitivity, 95.5s TimeCoverageRelationStatistics Valid=769, Invalid=7235, Unknown=34, NotChecked=1274, Total=9312 [2021-12-06 23:18:52,628 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 132 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1562 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:52,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 279 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1405 Invalid, 0 Unknown, 1562 Unchecked, 1.4s Time] [2021-12-06 23:18:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-12-06 23:18:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 245. [2021-12-06 23:18:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.2827868852459017) internal successors, (313), 244 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 313 transitions. [2021-12-06 23:18:52,660 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 313 transitions. Word has length 61 [2021-12-06 23:18:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:52,660 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 313 transitions. [2021-12-06 23:18:52,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 75 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 313 transitions. [2021-12-06 23:18:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:18:52,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:52,661 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:52,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 23:18:52,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 23:18:52,862 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:18:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash -787245068, now seen corresponding path program 9 times [2021-12-06 23:18:52,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494603984] [2021-12-06 23:18:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:52,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:52,880 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:18:52,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899002111] [2021-12-06 23:18:52,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:18:52,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:52,881 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:52,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 23:18:53,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 23:18:53,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:18:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:53,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:18:53,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:18:53,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:18:53,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:18:53,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:18:53,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:18:53,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-06 23:18:53,566 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:53,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-12-06 23:18:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-06 23:18:53,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:53,768 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_1914 (Array Int Int))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_1914) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) 2) (<= c_~N~0 |ULTIMATE.start_main_~i~0#1|) (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) is different from false [2021-12-06 23:18:54,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:54,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 33 [2021-12-06 23:18:54,214 INFO L354 Elim1Store]: treesize reduction 12, result has 25.0 percent of original size [2021-12-06 23:18:54,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-12-06 23:18:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 97 trivial. 23 not checked. [2021-12-06 23:18:54,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494603984] [2021-12-06 23:18:54,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:18:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899002111] [2021-12-06 23:18:54,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899002111] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:54,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:18:54,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-12-06 23:18:54,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660533630] [2021-12-06 23:18:54,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:54,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:18:54,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:18:54,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=178, Unknown=6, NotChecked=28, Total=272 [2021-12-06 23:18:54,251 INFO L87 Difference]: Start difference. First operand 245 states and 313 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:18:58,605 INFO L93 Difference]: Finished difference Result 317 states and 399 transitions. [2021-12-06 23:18:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:18:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-06 23:18:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:18:58,607 INFO L225 Difference]: With dead ends: 317 [2021-12-06 23:18:58,607 INFO L226 Difference]: Without dead ends: 313 [2021-12-06 23:18:58,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=82, Invalid=222, Unknown=6, NotChecked=32, Total=342 [2021-12-06 23:18:58,607 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:18:58,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2021-12-06 23:18:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-06 23:18:58,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 292. [2021-12-06 23:18:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.2852233676975946) internal successors, (374), 291 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 374 transitions. [2021-12-06 23:18:58,648 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 374 transitions. Word has length 61 [2021-12-06 23:18:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:18:58,648 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 374 transitions. [2021-12-06 23:18:58,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:18:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 374 transitions. [2021-12-06 23:18:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:18:58,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:18:58,649 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:18:58,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 23:18:58,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 23:18:58,850 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:18:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:18:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash -164445000, now seen corresponding path program 10 times [2021-12-06 23:18:58,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:18:58,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59869216] [2021-12-06 23:18:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:18:58,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:18:58,895 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:18:58,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594795891] [2021-12-06 23:18:58,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:18:58,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:18:58,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:18:58,898 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:18:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 23:18:58,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:18:58,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:18:58,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:18:58,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:18:59,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:18:59,279 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:18:59,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:18:59,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:59,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:18:59,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:59,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:18:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:59,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:18:59,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:18:59,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:18:59,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:18:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 23:18:59,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:18:59,612 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 2)) is different from false [2021-12-06 23:18:59,619 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:18:59,627 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:18:59,636 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) is different from false [2021-12-06 23:18:59,644 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) is different from false [2021-12-06 23:18:59,654 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2008 (Array Int Int)) (v_ArrVal_2004 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2004)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) is different from false [2021-12-06 23:18:59,672 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_621| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_621| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2008 (Array Int Int)) (v_ArrVal_2004 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_621| 4)) v_ArrVal_2004)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))))) is different from false [2021-12-06 23:18:59,789 INFO L354 Elim1Store]: treesize reduction 37, result has 42.2 percent of original size [2021-12-06 23:18:59,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 43 [2021-12-06 23:18:59,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:18:59,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2021-12-06 23:18:59,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:18:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 51 not checked. [2021-12-06 23:18:59,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:18:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59869216] [2021-12-06 23:18:59,974 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:18:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594795891] [2021-12-06 23:18:59,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594795891] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:18:59,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:18:59,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-12-06 23:18:59,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362029270] [2021-12-06 23:18:59,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:18:59,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 23:18:59,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:18:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 23:18:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=647, Unknown=7, NotChecked=406, Total=1190 [2021-12-06 23:18:59,975 INFO L87 Difference]: Start difference. First operand 292 states and 374 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 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) [2021-12-06 23:19:02,242 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 4) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2) (forall ((|v_ULTIMATE.start_main_~i~0#1_621| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_621| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2008 (Array Int Int)) (v_ArrVal_2004 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_621| 4)) v_ArrVal_2004)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))))))) is different from false [2021-12-06 23:19:04,315 WARN L838 $PredicateComparison]: unable to prove that (and (<= 5 |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2008 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_621| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_621| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2008 (Array Int Int)) (v_ArrVal_2004 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_621| 4)) v_ArrVal_2004)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2008) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))))))) is different from false [2021-12-06 23:19:05,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:05,053 INFO L93 Difference]: Finished difference Result 481 states and 632 transitions. [2021-12-06 23:19:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:19:05,053 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 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) Word has length 61 [2021-12-06 23:19:05,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:05,055 INFO L225 Difference]: With dead ends: 481 [2021-12-06 23:19:05,055 INFO L226 Difference]: Without dead ends: 452 [2021-12-06 23:19:05,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=155, Invalid=742, Unknown=9, NotChecked=576, Total=1482 [2021-12-06 23:19:05,055 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 544 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:05,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 92 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 875 Invalid, 0 Unknown, 544 Unchecked, 0.7s Time] [2021-12-06 23:19:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-06 23:19:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 410. [2021-12-06 23:19:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.2885085574572128) internal successors, (527), 409 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 527 transitions. [2021-12-06 23:19:05,114 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 527 transitions. Word has length 61 [2021-12-06 23:19:05,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:05,115 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 527 transitions. [2021-12-06 23:19:05,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 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) [2021-12-06 23:19:05,115 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 527 transitions. [2021-12-06 23:19:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:19:05,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:05,115 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:05,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 23:19:05,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:05,317 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2124367048, now seen corresponding path program 11 times [2021-12-06 23:19:05,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:05,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966274663] [2021-12-06 23:19:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:05,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:05,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:19:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25659222] [2021-12-06 23:19:05,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:19:05,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:05,364 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:05,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 23:19:05,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 23:19:05,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:19:05,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:05,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:19:05,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:19:05,851 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:05,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:05,889 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:05,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:05,924 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:05,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:05,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:19:05,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 23:19:06,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:19:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:06,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:06,096 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2105 (Array Int Int))) (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) is different from false [2021-12-06 23:19:06,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2105 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:19:06,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2105 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2)) is different from false [2021-12-06 23:19:06,121 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2103 Int)) (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2)) is different from false [2021-12-06 23:19:06,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_649| Int)) (or (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2103 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:19:06,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:19:06,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_650| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))) is different from false [2021-12-06 23:19:06,247 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) is different from false [2021-12-06 23:19:06,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_651| Int)) (or (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_651| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |v_ULTIMATE.start_main_~i~0#1_651| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) (< |v_ULTIMATE.start_main_~i~0#1_651| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-06 23:19:06,630 INFO L354 Elim1Store]: treesize reduction 267, result has 16.0 percent of original size [2021-12-06 23:19:06,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 67 [2021-12-06 23:19:06,637 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:06,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2021-12-06 23:19:06,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:19:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 51 not checked. [2021-12-06 23:19:06,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966274663] [2021-12-06 23:19:06,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:19:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25659222] [2021-12-06 23:19:06,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25659222] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:06,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:19:06,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 29 [2021-12-06 23:19:06,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108852895] [2021-12-06 23:19:06,682 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:06,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 23:19:06,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 23:19:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=318, Unknown=9, NotChecked=396, Total=812 [2021-12-06 23:19:06,683 INFO L87 Difference]: Start difference. First operand 410 states and 527 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2021-12-06 23:19:08,812 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= 2 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_651| Int)) (or (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_651| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |v_ULTIMATE.start_main_~i~0#1_651| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) (< |v_ULTIMATE.start_main_~i~0#1_651| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:19:10,855 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_650| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_651| Int)) (or (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_651| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |v_ULTIMATE.start_main_~i~0#1_651| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) (< |v_ULTIMATE.start_main_~i~0#1_651| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (<= 3 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-06 23:19:12,911 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_650| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_651| Int)) (or (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_651| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |v_ULTIMATE.start_main_~i~0#1_651| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) (< |v_ULTIMATE.start_main_~i~0#1_651| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (<= 4 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_649| Int)) (or (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2103 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-06 23:19:15,000 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_650| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_651| Int)) (or (forall ((v_ArrVal_2098 Int) (v_ArrVal_2105 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_650| Int) (v_ArrVal_2101 Int) (|v_ULTIMATE.start_main_~i~0#1_649| Int) (v_ArrVal_2103 Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_651| 4)) v_ArrVal_2098) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_650| 4)) v_ArrVal_2101) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2) (< |v_ULTIMATE.start_main_~i~0#1_650| (+ |v_ULTIMATE.start_main_~i~0#1_651| 1)) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |v_ULTIMATE.start_main_~i~0#1_650| 1)))) (< |v_ULTIMATE.start_main_~i~0#1_651| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (forall ((v_ArrVal_2105 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 2)) (= 2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (<= 4 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_649| Int)) (or (forall ((v_ArrVal_2105 (Array Int Int)) (v_ArrVal_2103 Int)) (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_649| 4)) v_ArrVal_2103)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2105) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (< |v_ULTIMATE.start_main_~i~0#1_649| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-06 23:19:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:15,383 INFO L93 Difference]: Finished difference Result 451 states and 578 transitions. [2021-12-06 23:19:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:19:15,384 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) Word has length 61 [2021-12-06 23:19:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:15,386 INFO L225 Difference]: With dead ends: 451 [2021-12-06 23:19:15,386 INFO L226 Difference]: Without dead ends: 379 [2021-12-06 23:19:15,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 32 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=106, Invalid=353, Unknown=13, NotChecked=650, Total=1122 [2021-12-06 23:19:15,387 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:15,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 71 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 523 Invalid, 0 Unknown, 464 Unchecked, 0.4s Time] [2021-12-06 23:19:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-06 23:19:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 372. [2021-12-06 23:19:15,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.2371967654986522) internal successors, (459), 371 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 459 transitions. [2021-12-06 23:19:15,439 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 459 transitions. Word has length 61 [2021-12-06 23:19:15,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:15,439 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 459 transitions. [2021-12-06 23:19:15,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 29 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) [2021-12-06 23:19:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 459 transitions. [2021-12-06 23:19:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:19:15,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:15,440 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:15,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-12-06 23:19:15,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:15,641 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1456319220, now seen corresponding path program 12 times [2021-12-06 23:19:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:15,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026802074] [2021-12-06 23:19:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:15,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:15,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:19:15,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589756584] [2021-12-06 23:19:15,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:19:15,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:15,684 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:15,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 23:19:16,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 23:19:16,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:16,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 23:19:16,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:16,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 23:19:16,450 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-06 23:19:16,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 23:19:16,496 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-06 23:19:16,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 23:19:16,541 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-06 23:19:16,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 23:19:16,635 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-06 23:19:16,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 23:19:16,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:19:16,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 23:19:16,880 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:16,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 23:19:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 23:19:17,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:17,486 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_2202 (Array Int Int))) (let ((.cse0 (+ 5 |ULTIMATE.start_main_~i~0#1|))) (or (= 2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (< c_~N~0 .cse0) (< .cse0 c_~N~0)))) is different from false [2021-12-06 23:19:17,874 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 4)) (<= (+ 5 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:19:17,894 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:19:17,919 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:19:17,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2))) is different from false [2021-12-06 23:19:17,985 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:19:18,030 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) is different from false [2021-12-06 23:19:18,059 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) is different from false [2021-12-06 23:19:18,104 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-12-06 23:19:18,312 INFO L354 Elim1Store]: treesize reduction 536, result has 11.1 percent of original size [2021-12-06 23:19:18,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 85 [2021-12-06 23:19:18,324 INFO L354 Elim1Store]: treesize reduction 12, result has 25.0 percent of original size [2021-12-06 23:19:18,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2021-12-06 23:19:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 37 trivial. 55 not checked. [2021-12-06 23:19:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026802074] [2021-12-06 23:19:18,382 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:19:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589756584] [2021-12-06 23:19:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589756584] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:18,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:19:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 39 [2021-12-06 23:19:18,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462458346] [2021-12-06 23:19:18,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:18,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-06 23:19:18,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-06 23:19:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=762, Unknown=19, NotChecked=576, Total=1482 [2021-12-06 23:19:18,383 INFO L87 Difference]: Start difference. First operand 372 states and 459 transitions. Second operand has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:19,601 WARN L838 $PredicateComparison]: unable to prove that (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2)) is different from false [2021-12-06 23:19:20,788 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~i~0#1| 4))) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse0 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse0) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse0) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1))))) is different from false [2021-12-06 23:19:22,202 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~mem8#1|))) is different from false [2021-12-06 23:19:24,211 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 2))) is different from false [2021-12-06 23:19:26,223 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:28,232 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~mem8#1|) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:30,244 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 2))) is different from false [2021-12-06 23:19:32,254 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:34,267 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~mem8#1|) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:36,283 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 2))) is different from false [2021-12-06 23:19:38,296 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 4)) (<= (+ 5 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 16) .cse1))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:40,311 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) |c_ULTIMATE.start_main_#t~mem8#1|) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 16) .cse1))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:42,325 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse3) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 16) .cse1))) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (< |c_ULTIMATE.start_main_~i~0#1| |v_ULTIMATE.start_main_~i~0#1_680|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 1) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 2))) is different from false [2021-12-06 23:19:44,343 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 4) .cse1)) 2) (forall ((v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (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|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2200)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 4)) (<= (+ 5 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8)))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((v_ArrVal_2194 Int) (v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (<= (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|) (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) v_ArrVal_2194) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse2) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_680| 1)))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 16) .cse1))) (exists ((|v_ULTIMATE.start_main_~i~0#1_666| Int)) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 16) (* |v_ULTIMATE.start_main_~i~0#1_666| 4))) 2) (<= |c_ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_666| 1)) (< |v_ULTIMATE.start_main_~i~0#1_666| c_~N~0))) (forall ((v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4))) 2) (< |c_ULTIMATE.start_main_~i~0#1| (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ |v_ULTIMATE.start_main_~i~0#1_680| 4) |c_ULTIMATE.start_main_~i~0#1|))) (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 12) .cse1))) (forall ((v_ArrVal_2196 Int) (v_ArrVal_2198 Int) (v_ArrVal_2200 Int) (v_ArrVal_2202 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_680| Int)) (or (= 2 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_2196) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4) v_ArrVal_2198) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4) v_ArrVal_2200))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_680| 4)))) (< |c_ULTIMATE.start_main_~i~0#1| (+ 2 |v_ULTIMATE.start_main_~i~0#1_680|)) (<= (+ 3 |v_ULTIMATE.start_main_~i~0#1_680|) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2021-12-06 23:19:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:44,862 INFO L93 Difference]: Finished difference Result 399 states and 490 transitions. [2021-12-06 23:19:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 23:19:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 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 61 [2021-12-06 23:19:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:44,864 INFO L225 Difference]: With dead ends: 399 [2021-12-06 23:19:44,864 INFO L226 Difference]: Without dead ends: 395 [2021-12-06 23:19:44,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 23 IntricatePredicates, 1 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=181, Invalid=934, Unknown=33, NotChecked=1932, Total=3080 [2021-12-06 23:19:44,865 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:44,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 76 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 351 Unchecked, 0.2s Time] [2021-12-06 23:19:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-06 23:19:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 381. [2021-12-06 23:19:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.236842105263158) internal successors, (470), 380 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2021-12-06 23:19:44,925 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 61 [2021-12-06 23:19:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:44,925 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2021-12-06 23:19:44,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.230769230769231) internal successors, (87), 39 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2021-12-06 23:19:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:19:44,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:44,926 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:44,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 23:19:45,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 23:19:45,127 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:45,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -725205454, now seen corresponding path program 5 times [2021-12-06 23:19:45,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:45,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258732172] [2021-12-06 23:19:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:45,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:45,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:19:45,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674595280] [2021-12-06 23:19:45,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:19:45,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:45,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:45,138 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:45,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 23:19:45,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-06 23:19:45,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 23:19:45,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:45,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:19:45,739 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:45,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:45,763 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:45,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:45,786 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:45,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:45,811 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:45,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:45,836 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 23:19:45,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 23:19:45,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 23:19:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 76 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:45,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:46,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 23:19:46,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-06 23:19:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 11 proven. 76 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:46,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258732172] [2021-12-06 23:19:46,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:19:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674595280] [2021-12-06 23:19:46,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674595280] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:46,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:19:46,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 22 [2021-12-06 23:19:46,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287846810] [2021-12-06 23:19:46,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:46,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 23:19:46,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 23:19:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:19:46,254 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:47,058 INFO L93 Difference]: Finished difference Result 541 states and 673 transitions. [2021-12-06 23:19:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:19:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 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 61 [2021-12-06 23:19:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:47,059 INFO L225 Difference]: With dead ends: 541 [2021-12-06 23:19:47,060 INFO L226 Difference]: Without dead ends: 340 [2021-12-06 23:19:47,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:19:47,060 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:47,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:19:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-06 23:19:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 313. [2021-12-06 23:19:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.2083333333333333) internal successors, (377), 312 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 377 transitions. [2021-12-06 23:19:47,109 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 377 transitions. Word has length 61 [2021-12-06 23:19:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:47,109 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 377 transitions. [2021-12-06 23:19:47,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 377 transitions. [2021-12-06 23:19:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 23:19:47,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:47,110 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:47,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 23:19:47,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 23:19:47,310 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash 598958326, now seen corresponding path program 6 times [2021-12-06 23:19:47,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:47,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080100434] [2021-12-06 23:19:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:47,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:47,352 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:19:47,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908323542] [2021-12-06 23:19:47,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:19:47,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:47,354 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:47,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 23:19:47,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 23:19:47,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:47,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 23:19:47,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:47,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 23:19:47,912 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-12-06 23:19:47,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 23:19:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:19:48,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-06 23:19:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:19:48,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-06 23:19:48,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:19:48,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-06 23:19:48,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 23:19:48,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2021-12-06 23:19:48,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:19:48,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:19:48,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 18 [2021-12-06 23:19:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:48,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:49,962 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_2389 Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2389) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1))) is different from false [2021-12-06 23:19:49,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-12-06 23:19:49,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 170 [2021-12-06 23:19:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 11 not checked. [2021-12-06 23:19:50,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:50,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080100434] [2021-12-06 23:19:50,112 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:19:50,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908323542] [2021-12-06 23:19:50,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908323542] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:50,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:19:50,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 38 [2021-12-06 23:19:50,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364139621] [2021-12-06 23:19:50,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:50,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 23:19:50,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 23:19:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1148, Unknown=1, NotChecked=70, Total=1406 [2021-12-06 23:19:50,114 INFO L87 Difference]: Start difference. First operand 313 states and 377 transitions. Second operand has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:51,004 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 4) .cse0 (or (and (< 4 c_~N~0) (<= c_~N~0 5)) .cse0) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_2389 Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2389) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1))) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) (or (= (* 4 |c_ULTIMATE.start_main_~i~0#1|) 16) .cse0))) is different from false [2021-12-06 23:19:51,704 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) .cse0 (or (and (< 4 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| 5)) (and .cse0 (< |c_ULTIMATE.start_main_~i~0#1| (+ c_~N~0 1)))) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_2389 Int)) (or (<= |ULTIMATE.start_main_~i~0#1| 4) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_2389) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) 1))))) is different from false [2021-12-06 23:19:53,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:53,290 INFO L93 Difference]: Finished difference Result 409 states and 495 transitions. [2021-12-06 23:19:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 23:19:53,291 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 0 states have call successors, (0), 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 61 [2021-12-06 23:19:53,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:53,292 INFO L225 Difference]: With dead ends: 409 [2021-12-06 23:19:53,292 INFO L226 Difference]: Without dead ends: 298 [2021-12-06 23:19:53,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=490, Invalid=3425, Unknown=3, NotChecked=372, Total=4290 [2021-12-06 23:19:53,293 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 94 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:53,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 72 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1172 Invalid, 0 Unknown, 69 Unchecked, 0.8s Time] [2021-12-06 23:19:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-06 23:19:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 278. [2021-12-06 23:19:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.2093862815884477) internal successors, (335), 277 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 335 transitions. [2021-12-06 23:19:53,336 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 335 transitions. Word has length 61 [2021-12-06 23:19:53,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:53,336 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 335 transitions. [2021-12-06 23:19:53,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 335 transitions. [2021-12-06 23:19:53,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 23:19:53,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:53,337 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:53,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-12-06 23:19:53,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 23:19:53,538 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1549104648, now seen corresponding path program 17 times [2021-12-06 23:19:53,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79832223] [2021-12-06 23:19:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:53,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:19:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:53,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79832223] [2021-12-06 23:19:53,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79832223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:19:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766782507] [2021-12-06 23:19:53,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:19:53,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:53,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:53,805 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:53,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 23:19:54,256 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 23:19:54,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:19:54,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:54,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:54,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766782507] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:54,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:19:54,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2021-12-06 23:19:54,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783344901] [2021-12-06 23:19:54,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:54,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:19:54,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:19:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:19:54,625 INFO L87 Difference]: Start difference. First operand 278 states and 335 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 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) [2021-12-06 23:19:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:55,624 INFO L93 Difference]: Finished difference Result 367 states and 445 transitions. [2021-12-06 23:19:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:19:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 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 63 [2021-12-06 23:19:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:55,627 INFO L225 Difference]: With dead ends: 367 [2021-12-06 23:19:55,627 INFO L226 Difference]: Without dead ends: 320 [2021-12-06 23:19:55,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 23:19:55,628 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 180 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:55,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 31 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 23:19:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-12-06 23:19:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 228. [2021-12-06 23:19:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.2114537444933922) internal successors, (275), 227 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 275 transitions. [2021-12-06 23:19:55,665 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 275 transitions. Word has length 63 [2021-12-06 23:19:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:55,666 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 275 transitions. [2021-12-06 23:19:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 26 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) [2021-12-06 23:19:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 275 transitions. [2021-12-06 23:19:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 23:19:55,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:55,666 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:55,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 23:19:55,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 23:19:55,868 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1437404093, now seen corresponding path program 18 times [2021-12-06 23:19:55,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:55,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483323066] [2021-12-06 23:19:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:55,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:19:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 54 proven. 52 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:56,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483323066] [2021-12-06 23:19:56,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483323066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:19:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151436495] [2021-12-06 23:19:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:19:56,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:56,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:56,157 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:56,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 23:19:56,540 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 23:19:56,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:19:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:19:56,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:56,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:19:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-06 23:19:56,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151436495] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:19:56,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:19:56,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2021-12-06 23:19:56,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347450174] [2021-12-06 23:19:56,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:19:56,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:19:56,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:19:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:19:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:19:56,905 INFO L87 Difference]: Start difference. First operand 228 states and 275 transitions. Second operand has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:19:57,439 INFO L93 Difference]: Finished difference Result 324 states and 389 transitions. [2021-12-06 23:19:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 23:19:57,440 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-06 23:19:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:19:57,441 INFO L225 Difference]: With dead ends: 324 [2021-12-06 23:19:57,441 INFO L226 Difference]: Without dead ends: 152 [2021-12-06 23:19:57,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:19:57,442 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 171 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:19:57,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 47 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:19:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-06 23:19:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2021-12-06 23:19:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2021-12-06 23:19:57,467 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 64 [2021-12-06 23:19:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:19:57,467 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2021-12-06 23:19:57,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.923076923076923) internal successors, (76), 26 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:19:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2021-12-06 23:19:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 23:19:57,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:19:57,468 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:19:57,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 23:19:57,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 23:19:57,669 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:19:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:19:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1442778319, now seen corresponding path program 19 times [2021-12-06 23:19:57,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:19:57,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098316272] [2021-12-06 23:19:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:19:57,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:19:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:19:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 23:19:59,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:19:59,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098316272] [2021-12-06 23:19:59,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098316272] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:19:59,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599500218] [2021-12-06 23:19:59,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:19:59,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:19:59,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:19:59,224 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:19:59,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8b0aa2e-0cfa-46d6-ac0e-ad98cb95a446/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 23:19:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:19:59,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 100 conjunts are in the unsatisfiable core [2021-12-06 23:19:59,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:19:59,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 23:19:59,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 23:19:59,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-06 23:19:59,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 23:20:00,002 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:20:00,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2021-12-06 23:20:00,329 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:20:00,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 59 [2021-12-06 23:20:00,638 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-06 23:20:00,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 58 [2021-12-06 23:20:00,942 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:20:00,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:20:01,258 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:20:01,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 43 [2021-12-06 23:20:01,739 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:20:01,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 23:20:01,998 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 23:20:01,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 35 [2021-12-06 23:20:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-06 23:20:02,070 INFO L328 TraceCheckSpWp]: Computing backward predicates...