./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/indp5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU --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 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:46:59,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:46:59,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:46:59,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:46:59,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:46:59,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:46:59,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:46:59,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:46:59,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:46:59,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:46:59,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:46:59,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:46:59,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:46:59,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:46:59,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:46:59,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:46:59,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:46:59,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:46:59,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:46:59,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:46:59,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:46:59,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:46:59,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:46:59,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:46:59,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:46:59,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:46:59,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:46:59,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:46:59,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:46:59,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:46:59,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:46:59,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:46:59,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:46:59,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:46:59,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:46:59,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:46:59,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:46:59,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:46:59,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:46:59,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:46:59,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:46:59,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:47:00,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:47:00,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:47:00,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:47:00,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:47:00,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:47:00,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:47:00,058 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:47:00,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:47:00,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:47:00,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:47:00,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:47:00,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:47:00,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:47:00,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:47:00,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:47:00,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:47:00,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:47:00,063 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:47:00,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:47:00,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:47:00,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:47:00,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:47:00,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:47:00,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:47:00,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:47:00,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:47:00,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:47:00,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:47:00,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:47:00,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:47:00,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:47:00,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:47:00,068 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_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b [2021-11-02 22:47:00,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:47:00,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:47:00,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:47:00,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:47:00,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:47:00,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/array-fpi/indp5.c [2021-11-02 22:47:00,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/data/7f31c9909/b6f1a610857e4db183aafcb2c0e0ccfc/FLAG56d3b0ce1 [2021-11-02 22:47:01,135 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:47:01,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/sv-benchmarks/c/array-fpi/indp5.c [2021-11-02 22:47:01,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/data/7f31c9909/b6f1a610857e4db183aafcb2c0e0ccfc/FLAG56d3b0ce1 [2021-11-02 22:47:01,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/data/7f31c9909/b6f1a610857e4db183aafcb2c0e0ccfc [2021-11-02 22:47:01,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:47:01,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:47:01,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:47:01,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:47:01,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:47:01,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc67e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01, skipping insertion in model container [2021-11-02 22:47:01,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:47:01,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:47:01,761 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/sv-benchmarks/c/array-fpi/indp5.c[588,601] [2021-11-02 22:47:01,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:47:01,799 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:47:01,811 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/sv-benchmarks/c/array-fpi/indp5.c[588,601] [2021-11-02 22:47:01,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:47:01,839 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:47:01,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01 WrapperNode [2021-11-02 22:47:01,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:47:01,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:47:01,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:47:01,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:47:01,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:47:01,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:47:01,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:47:01,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:47:01,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:47:01,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:47:01,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:47:01,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:47:01,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (1/1) ... [2021-11-02 22:47:01,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:47:01,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:01,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:47:02,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:47:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:47:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:47:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:47:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:47:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:47:02,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:47:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:47:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:47:02,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:47:02,421 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-02 22:47:02,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:47:02 BoogieIcfgContainer [2021-11-02 22:47:02,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:47:02,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:47:02,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:47:02,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:47:02,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:47:01" (1/3) ... [2021-11-02 22:47:02,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbd0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:47:02, skipping insertion in model container [2021-11-02 22:47:02,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:47:01" (2/3) ... [2021-11-02 22:47:02,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbd0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:47:02, skipping insertion in model container [2021-11-02 22:47:02,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:47:02" (3/3) ... [2021-11-02 22:47:02,463 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5.c [2021-11-02 22:47:02,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:47:02,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:47:02,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:47:02,614 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:47:02,630 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:47:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:02,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:47:02,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:02,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:02,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2021-11-02 22:47:02,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:02,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434072551] [2021-11-02 22:47:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:02,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:02,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:02,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434072551] [2021-11-02 22:47:02,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434072551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:02,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:02,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:47:02,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155716848] [2021-11-02 22:47:03,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:47:03,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:47:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:47:03,036 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:03,066 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2021-11-02 22:47:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:47:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 22:47:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:03,094 INFO L225 Difference]: With dead ends: 50 [2021-11-02 22:47:03,095 INFO L226 Difference]: Without dead ends: 23 [2021-11-02 22:47:03,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:47:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-02 22:47:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-02 22:47:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-02 22:47:03,160 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2021-11-02 22:47:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:03,160 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-02 22:47:03,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-02 22:47:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:47:03,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:03,162 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:03,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:47:03,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:03,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2021-11-02 22:47:03,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:03,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699084066] [2021-11-02 22:47:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:03,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:03,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699084066] [2021-11-02 22:47:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699084066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:47:03,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:47:03,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:47:03,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762865677] [2021-11-02 22:47:03,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:47:03,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:47:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:47:03,305 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:03,476 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-11-02 22:47:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:47:03,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 22:47:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:03,480 INFO L225 Difference]: With dead ends: 49 [2021-11-02 22:47:03,482 INFO L226 Difference]: Without dead ends: 33 [2021-11-02 22:47:03,483 INFO L786 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 [2021-11-02 22:47:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-02 22:47:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-11-02 22:47:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-02 22:47:03,503 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-11-02 22:47:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:03,503 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-02 22:47:03,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-02 22:47:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:47:03,506 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:03,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:03,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:47:03,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:03,509 INFO L85 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2021-11-02 22:47:03,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:03,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118416420] [2021-11-02 22:47:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:03,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:03,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:47:03,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603690789] [2021-11-02 22:47:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:03,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:03,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:03,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:03,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:47:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:03,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:47:03,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:03,860 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 [2021-11-02 22:47:03,872 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 [2021-11-02 22:47:03,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-02 22:47:04,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:47:04,086 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 39 treesize of output 20 [2021-11-02 22:47:04,424 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 30 treesize of output 21 [2021-11-02 22:47:04,592 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 30 treesize of output 21 [2021-11-02 22:47:04,756 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 30 treesize of output 21 [2021-11-02 22:47:04,897 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-02 22:47:04,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-02 22:47:05,139 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:47:05,140 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 52 treesize of output 36 [2021-11-02 22:47:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:05,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118416420] [2021-11-02 22:47:05,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:47:05,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603690789] [2021-11-02 22:47:05,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603690789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:05,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:47:05,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-02 22:47:05,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368039796] [2021-11-02 22:47:05,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:47:05,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:47:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:47:05,203 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:05,526 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-11-02 22:47:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:47:05,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-02 22:47:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:05,529 INFO L225 Difference]: With dead ends: 50 [2021-11-02 22:47:05,529 INFO L226 Difference]: Without dead ends: 46 [2021-11-02 22:47:05,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:47:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-02 22:47:05,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-11-02 22:47:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 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) [2021-11-02 22:47:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2021-11-02 22:47:05,540 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 27 [2021-11-02 22:47:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:05,540 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2021-11-02 22:47:05,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2021-11-02 22:47:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:47:05,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:05,543 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:05,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:05,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:05,771 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1332490364, now seen corresponding path program 2 times [2021-11-02 22:47:05,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:05,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855584644] [2021-11-02 22:47:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:05,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:05,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:47:05,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796929603] [2021-11-02 22:47:05,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:47:05,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:05,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:05,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:05,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:47:05,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:47:05,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:05,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:47:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:47:06,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:06,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855584644] [2021-11-02 22:47:06,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:47:06,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796929603] [2021-11-02 22:47:06,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796929603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:06,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:47:06,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-02 22:47:06,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72628798] [2021-11-02 22:47:06,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:47:06,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:06,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:47:06,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:47:06,070 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:06,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:06,300 INFO L93 Difference]: Finished difference Result 99 states and 115 transitions. [2021-11-02 22:47:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:47:06,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 22:47:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:06,303 INFO L225 Difference]: With dead ends: 99 [2021-11-02 22:47:06,303 INFO L226 Difference]: Without dead ends: 65 [2021-11-02 22:47:06,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:47:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-02 22:47:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-11-02 22:47:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-11-02 22:47:06,322 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 29 [2021-11-02 22:47:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:06,323 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-11-02 22:47:06,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-11-02 22:47:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:47:06,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:06,330 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:06,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 22:47:06,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:06,543 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 264308668, now seen corresponding path program 3 times [2021-11-02 22:47:06,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:06,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693816368] [2021-11-02 22:47:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:06,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:06,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:47:06,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756043045] [2021-11-02 22:47:06,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:47:06,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:06,569 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:06,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:47:06,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-02 22:47:06,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:06,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:47:06,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:47:06,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:06,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693816368] [2021-11-02 22:47:06,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:47:06,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756043045] [2021-11-02 22:47:06,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756043045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:06,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:47:06,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-02 22:47:06,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998655034] [2021-11-02 22:47:06,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:47:06,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:47:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:47:06,898 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:07,061 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-11-02 22:47:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:47:07,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 22:47:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:07,063 INFO L225 Difference]: With dead ends: 58 [2021-11-02 22:47:07,063 INFO L226 Difference]: Without dead ends: 42 [2021-11-02 22:47:07,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:47:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-02 22:47:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-11-02 22:47:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-02 22:47:07,070 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2021-11-02 22:47:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:07,071 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-02 22:47:07,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-02 22:47:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 22:47:07,073 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:07,073 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:07,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:07,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:07,291 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 982389828, now seen corresponding path program 4 times [2021-11-02 22:47:07,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:07,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300619660] [2021-11-02 22:47:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:07,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:07,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:47:07,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910792469] [2021-11-02 22:47:07,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:47:07,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:07,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:07,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:47:07,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:47:07,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:07,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-02 22:47:07,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:07,595 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 [2021-11-02 22:47:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-02 22:47:07,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:47:07,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:07,725 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 39 treesize of output 20 [2021-11-02 22:47:07,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:07,820 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-02 22:47:07,824 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 1 case distinctions, treesize of input 28 treesize of output 30 [2021-11-02 22:47:08,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,113 INFO L354 Elim1Store]: treesize reduction 365, result has 11.8 percent of original size [2021-11-02 22:47:08,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 105 treesize of output 130 [2021-11-02 22:47:08,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 51 [2021-11-02 22:47:08,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,497 INFO L354 Elim1Store]: treesize reduction 363, result has 12.3 percent of original size [2021-11-02 22:47:08,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 105 treesize of output 132 [2021-11-02 22:47:08,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:47:08,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:08,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:08,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 54 [2021-11-02 22:47:08,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,001 INFO L354 Elim1Store]: treesize reduction 349, result has 13.2 percent of original size [2021-11-02 22:47:09,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 101 treesize of output 130 [2021-11-02 22:47:09,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:09,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 51 [2021-11-02 22:47:09,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,266 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-02 22:47:09,266 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 2 case distinctions, treesize of input 45 treesize of output 35 [2021-11-02 22:47:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,588 INFO L354 Elim1Store]: treesize reduction 353, result has 12.2 percent of original size [2021-11-02 22:47:09,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 101 treesize of output 126 [2021-11-02 22:47:09,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:47:09,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 45 [2021-11-02 22:47:09,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:09,861 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-02 22:47:09,862 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 2 case distinctions, treesize of input 45 treesize of output 35 [2021-11-02 22:47:10,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,097 INFO L354 Elim1Store]: treesize reduction 93, result has 1.1 percent of original size [2021-11-02 22:47:10,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 133 [2021-11-02 22:47:10,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:47:10,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 41 [2021-11-02 22:47:10,553 INFO L354 Elim1Store]: treesize reduction 669, result has 13.1 percent of original size [2021-11-02 22:47:10,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 109 treesize of output 152 [2021-11-02 22:47:10,587 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:47:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:47:10,687 INFO L354 Elim1Store]: treesize reduction 166, result has 4.0 percent of original size [2021-11-02 22:47:10,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 89 [2021-11-02 22:47:11,302 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-02 22:47:11,303 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 82 treesize of output 44 [2021-11-02 22:47:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:47:11,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:11,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300619660] [2021-11-02 22:47:11,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:47:11,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910792469] [2021-11-02 22:47:11,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910792469] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:11,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:47:11,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-11-02 22:47:11,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595184762] [2021-11-02 22:47:11,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:47:11,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:11,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:47:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:47:11,379 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:19,771 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-11-02 22:47:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:47:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-11-02 22:47:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:19,773 INFO L225 Difference]: With dead ends: 68 [2021-11-02 22:47:19,773 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 22:47:19,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:47:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 22:47:19,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-11-02 22:47:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-11-02 22:47:19,785 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 37 [2021-11-02 22:47:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:19,785 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-11-02 22:47:19,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-11-02 22:47:19,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:47:19,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:19,788 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:47:19,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:19,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:19,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:47:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:19,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2131981894, now seen corresponding path program 5 times [2021-11-02 22:47:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:19,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988895779] [2021-11-02 22:47:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:19,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:20,008 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:47:20,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802274691] [2021-11-02 22:47:20,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:47:20,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:20,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:20,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:20,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:48:35,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-02 22:48:35,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:48:35,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:48:35,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988895779] [2021-11-02 22:48:35,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:35,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802274691] [2021-11-02 22:48:35,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802274691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:35,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:35,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-02 22:48:35,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353689488] [2021-11-02 22:48:35,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:48:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:48:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:48:35,264 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2021-11-02 22:48:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:35,620 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-11-02 22:48:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:48:35,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) Word has length 39 [2021-11-02 22:48:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:35,622 INFO L225 Difference]: With dead ends: 98 [2021-11-02 22:48:35,622 INFO L226 Difference]: Without dead ends: 76 [2021-11-02 22:48:35,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:48:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-02 22:48:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2021-11-02 22:48:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 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) [2021-11-02 22:48:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-02 22:48:35,632 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 39 [2021-11-02 22:48:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:35,633 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-02 22:48:35,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2021-11-02 22:48:35,633 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-02 22:48:35,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:48:35,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:35,634 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:48:35,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:35,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:48:35,852 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:48:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash -762945914, now seen corresponding path program 6 times [2021-11-02 22:48:35,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:35,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092079117] [2021-11-02 22:48:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:35,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:35,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:48:35,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677966484] [2021-11-02 22:48:35,878 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:48:35,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:35,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:35,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:48:36,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-02 22:48:36,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:36,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:48:36,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:48:36,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:36,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092079117] [2021-11-02 22:48:36,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:36,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677966484] [2021-11-02 22:48:36,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677966484] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:36,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:36,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-02 22:48:36,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325539004] [2021-11-02 22:48:36,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:48:36,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:48:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:48:36,339 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2021-11-02 22:48:36,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:36,554 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-11-02 22:48:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:48:36,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) Word has length 39 [2021-11-02 22:48:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:36,555 INFO L225 Difference]: With dead ends: 107 [2021-11-02 22:48:36,556 INFO L226 Difference]: Without dead ends: 53 [2021-11-02 22:48:36,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:48:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-02 22:48:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-11-02 22:48:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 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) [2021-11-02 22:48:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-11-02 22:48:36,567 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 39 [2021-11-02 22:48:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:36,567 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-11-02 22:48:36,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2021-11-02 22:48:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-11-02 22:48:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:48:36,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:36,570 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:48:36,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:36,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:36,779 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:48:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1373102066, now seen corresponding path program 7 times [2021-11-02 22:48:36,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:36,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023402755] [2021-11-02 22:48:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:36,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:36,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:48:36,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71549415] [2021-11-02 22:48:36,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:48:36,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:36,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:36,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:36,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:48:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:37,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-02 22:48:37,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:37,562 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 [2021-11-02 22:48:37,569 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 [2021-11-02 22:48:37,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-02 22:48:37,673 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:37,693 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 39 treesize of output 20 [2021-11-02 22:48:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,792 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:37,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 93 [2021-11-02 22:48:37,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 24 [2021-11-02 22:48:37,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,936 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:37,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 114 [2021-11-02 22:48:37,961 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:37,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:37,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-11-02 22:48:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:38,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,301 INFO L354 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2021-11-02 22:48:38,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 114 treesize of output 168 [2021-11-02 22:48:38,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:38,391 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:38,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 51 [2021-11-02 22:48:38,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:38,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,564 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:38,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 114 treesize of output 168 [2021-11-02 22:48:38,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:38,664 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:38,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 115 treesize of output 64 [2021-11-02 22:48:38,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:38,834 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:38,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2021-11-02 22:48:39,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,085 INFO L354 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2021-11-02 22:48:39,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 110 treesize of output 162 [2021-11-02 22:48:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,141 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 69 [2021-11-02 22:48:39,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,331 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:39,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 162 [2021-11-02 22:48:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,366 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:39,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 63 [2021-11-02 22:48:39,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,579 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:39,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2021-11-02 22:48:39,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,847 INFO L354 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2021-11-02 22:48:39,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 110 treesize of output 162 [2021-11-02 22:48:39,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:39,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:39,884 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:39,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 57 [2021-11-02 22:48:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,098 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:40,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 162 [2021-11-02 22:48:40,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:40,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 46 [2021-11-02 22:48:40,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,368 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:40,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 47 [2021-11-02 22:48:40,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:40,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,668 INFO L354 Elim1Store]: treesize reduction 112, result has 22.2 percent of original size [2021-11-02 22:48:40,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 101 treesize of output 145 [2021-11-02 22:48:40,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:40,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 75 [2021-11-02 22:48:40,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:40,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 136 [2021-11-02 22:48:40,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:40,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:40,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 71 [2021-11-02 22:48:41,267 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-02 22:48:41,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 66 treesize of output 47 [2021-11-02 22:48:41,467 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 22:48:41,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 47 [2021-11-02 22:48:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:41,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:41,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023402755] [2021-11-02 22:48:41,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:41,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71549415] [2021-11-02 22:48:41,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71549415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:41,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:41,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-11-02 22:48:41,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353818619] [2021-11-02 22:48:41,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:48:41,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:48:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:48:41,532 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 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) [2021-11-02 22:48:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:45,609 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-11-02 22:48:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:48:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 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 47 [2021-11-02 22:48:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:45,614 INFO L225 Difference]: With dead ends: 86 [2021-11-02 22:48:45,614 INFO L226 Difference]: Without dead ends: 82 [2021-11-02 22:48:45,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:48:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-02 22:48:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-11-02 22:48:45,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-11-02 22:48:45,637 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 47 [2021-11-02 22:48:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:45,637 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-11-02 22:48:45,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.46875) internal successors, (47), 32 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) [2021-11-02 22:48:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-11-02 22:48:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:48:45,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:45,641 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:48:45,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:45,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:45,843 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:48:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2056075376, now seen corresponding path program 8 times [2021-11-02 22:48:45,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:45,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015553829] [2021-11-02 22:48:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:45,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:45,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:48:45,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098585386] [2021-11-02 22:48:45,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:48:45,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:45,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:45,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:48:46,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:48:46,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:46,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:48:46,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:48:46,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:46,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015553829] [2021-11-02 22:48:46,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:46,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098585386] [2021-11-02 22:48:46,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098585386] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:46,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:46,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-02 22:48:46,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506823126] [2021-11-02 22:48:46,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:48:46,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:48:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:48:46,455 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:46,732 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2021-11-02 22:48:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:48:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 49 [2021-11-02 22:48:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:46,734 INFO L225 Difference]: With dead ends: 159 [2021-11-02 22:48:46,734 INFO L226 Difference]: Without dead ends: 97 [2021-11-02 22:48:46,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:48:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-02 22:48:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2021-11-02 22:48:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 79 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) [2021-11-02 22:48:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-11-02 22:48:46,746 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 49 [2021-11-02 22:48:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:46,746 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-11-02 22:48:46,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-11-02 22:48:46,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:48:46,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:46,748 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:48:46,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:46,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:48:46,959 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:48:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 449756880, now seen corresponding path program 9 times [2021-11-02 22:48:46,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:46,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236083223] [2021-11-02 22:48:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:46,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:46,972 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:48:46,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210752281] [2021-11-02 22:48:46,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:48:46,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:46,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:46,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:48:47,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-02 22:48:47,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:47,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:48:47,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:48:48,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:48,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236083223] [2021-11-02 22:48:48,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:48,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210752281] [2021-11-02 22:48:48,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210752281] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:48,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:48,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-02 22:48:48,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572616872] [2021-11-02 22:48:48,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:48:48,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:48:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:48:48,072 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:48,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:48,340 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-11-02 22:48:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:48:48,341 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 49 [2021-11-02 22:48:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:48,341 INFO L225 Difference]: With dead ends: 90 [2021-11-02 22:48:48,341 INFO L226 Difference]: Without dead ends: 62 [2021-11-02 22:48:48,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:48:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-02 22:48:48,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-02 22:48:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 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) [2021-11-02 22:48:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-11-02 22:48:48,350 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 49 [2021-11-02 22:48:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:48,350 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-11-02 22:48:48,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-11-02 22:48:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:48:48,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:48,351 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:48:48,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:48,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:48:48,567 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:48:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1464682664, now seen corresponding path program 10 times [2021-11-02 22:48:48,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:48,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684563293] [2021-11-02 22:48:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:48,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:48,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:48:48,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044857995] [2021-11-02 22:48:48,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:48:48,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:48,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:48,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:48:52,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:48:52,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:52,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-02 22:48:52,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:52,171 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 [2021-11-02 22:48:52,176 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 [2021-11-02 22:48:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 76 [2021-11-02 22:48:52,230 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 32 treesize of output 17 [2021-11-02 22:48:52,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,340 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:52,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 93 [2021-11-02 22:48:52,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 20 [2021-11-02 22:48:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,486 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:52,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 114 [2021-11-02 22:48:52,535 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:52,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 39 [2021-11-02 22:48:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,741 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:52,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 149 [2021-11-02 22:48:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:52,784 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:52,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 51 [2021-11-02 22:48:53,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,133 INFO L354 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2021-11-02 22:48:53,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 123 treesize of output 189 [2021-11-02 22:48:53,167 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,266 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:53,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 75 [2021-11-02 22:48:53,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,487 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:53,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 189 [2021-11-02 22:48:53,519 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 56 [2021-11-02 22:48:53,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,768 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:53,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 123 treesize of output 189 [2021-11-02 22:48:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:53,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 55 [2021-11-02 22:48:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,054 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:54,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 59 [2021-11-02 22:48:54,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:54,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,365 INFO L354 Elim1Store]: treesize reduction 40, result has 14.9 percent of original size [2021-11-02 22:48:54,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 119 treesize of output 183 [2021-11-02 22:48:54,390 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:54,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:54,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,486 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:54,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 71 [2021-11-02 22:48:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:54,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,712 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:54,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 183 [2021-11-02 22:48:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,763 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:54,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 60 [2021-11-02 22:48:54,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,159 INFO L354 Elim1Store]: treesize reduction 700, result has 11.5 percent of original size [2021-11-02 22:48:55,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 130 treesize of output 165 [2021-11-02 22:48:55,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 58 [2021-11-02 22:48:55,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,330 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:55,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 54 [2021-11-02 22:48:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,819 INFO L354 Elim1Store]: treesize reduction 435, result has 15.2 percent of original size [2021-11-02 22:48:55,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 33 case distinctions, treesize of input 222 treesize of output 187 [2021-11-02 22:48:55,856 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:55,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:55,966 INFO L354 Elim1Store]: treesize reduction 78, result has 1.3 percent of original size [2021-11-02 22:48:55,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 263 treesize of output 140 [2021-11-02 22:48:56,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:56,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,401 INFO L354 Elim1Store]: treesize reduction 297, result has 10.8 percent of original size [2021-11-02 22:48:56,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 26 case distinctions, treesize of input 174 treesize of output 210 [2021-11-02 22:48:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:56,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,447 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:56,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 172 treesize of output 97 [2021-11-02 22:48:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:56,853 INFO L354 Elim1Store]: treesize reduction 269, result has 9.7 percent of original size [2021-11-02 22:48:56,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 25 case distinctions, treesize of input 174 treesize of output 210 [2021-11-02 22:48:56,882 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:56,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:56,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:56,979 INFO L354 Elim1Store]: treesize reduction 135, result has 2.2 percent of original size [2021-11-02 22:48:56,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 228 treesize of output 136 [2021-11-02 22:48:57,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:57,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,251 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-02 22:48:57,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 197 [2021-11-02 22:48:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:57,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 72 [2021-11-02 22:48:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,512 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:57,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 59 [2021-11-02 22:48:57,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:57,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,829 INFO L354 Elim1Store]: treesize reduction 106, result has 26.4 percent of original size [2021-11-02 22:48:57,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 25 case distinctions, treesize of input 110 treesize of output 172 [2021-11-02 22:48:57,878 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-02 22:48:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:57,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:57,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 78 [2021-11-02 22:48:58,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:58,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 157 [2021-11-02 22:48:58,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 90 [2021-11-02 22:48:58,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:58,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,662 INFO L354 Elim1Store]: treesize reduction 47, result has 24.2 percent of original size [2021-11-02 22:48:58,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 116 treesize of output 177 [2021-11-02 22:48:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:48:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-02 22:48:58,769 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:48:58,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 90 [2021-11-02 22:48:58,996 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-02 22:48:58,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 63 treesize of output 55 [2021-11-02 22:48:59,226 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 22:48:59,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 50 [2021-11-02 22:48:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:48:59,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:59,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684563293] [2021-11-02 22:48:59,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 22:48:59,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044857995] [2021-11-02 22:48:59,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044857995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:59,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:48:59,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2021-11-02 22:48:59,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96166472] [2021-11-02 22:48:59,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:48:59,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:59,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:48:59,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1612, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:48:59,313 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:07,067 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2021-11-02 22:49:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 22:49:07,067 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:49:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:07,069 INFO L225 Difference]: With dead ends: 104 [2021-11-02 22:49:07,069 INFO L226 Difference]: Without dead ends: 100 [2021-11-02 22:49:07,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:49:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-02 22:49:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2021-11-02 22:49:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 92 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) [2021-11-02 22:49:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2021-11-02 22:49:07,085 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 57 [2021-11-02 22:49:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:07,085 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2021-11-02 22:49:07,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2021-11-02 22:49:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:49:07,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:07,087 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:49:07,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:07,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:49:07,298 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:49:07,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:07,299 INFO L85 PathProgramCache]: Analyzing trace with hash 919192666, now seen corresponding path program 11 times [2021-11-02 22:49:07,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:07,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606103632] [2021-11-02 22:49:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:07,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:07,311 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 22:49:07,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228706995] [2021-11-02 22:49:07,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:49:07,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:07,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:07,323 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:07,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60247101-8738-4ba5-b9df-250566d87ef8/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process