./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G --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 cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:06:55,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:06:55,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:06:55,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:06:55,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:06:55,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:06:55,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:06:55,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:06:55,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:06:55,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:06:55,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:06:55,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:06:55,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:06:55,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:06:55,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:06:55,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:06:55,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:06:55,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:06:55,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:06:55,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:06:55,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:06:55,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:06:55,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:06:55,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:06:55,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:06:55,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:06:55,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:06:55,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:06:55,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:06:55,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:06:55,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:06:55,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:06:55,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:06:55,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:06:55,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:06:55,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:06:55,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:06:55,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:06:55,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:06:55,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:06:55,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:06:55,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:06:55,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:06:55,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:06:55,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:06:55,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:06:55,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:06:55,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:06:55,725 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:06:55,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:06:55,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:06:55,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:06:55,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:06:55,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:06:55,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:06:55,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:06:55,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:06:55,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:06:55,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:06:55,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:06:55,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:06:55,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:06:55,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:06:55,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:06:55,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:55,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:06:55,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:06:55,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:06:55,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:06:55,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:06:55,733 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:06:55,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:06:55,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:06:55,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:06:55,736 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_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 [2021-11-23 13:06:56,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:06:56,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:06:56,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:06:56,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:06:56,131 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:06:56,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/array-fpi/ifeqn2.c [2021-11-23 13:06:56,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/data/c07f028d6/9647dae9e255465baebb33789fa2185c/FLAGd0a288a42 [2021-11-23 13:06:56,832 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:06:56,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/sv-benchmarks/c/array-fpi/ifeqn2.c [2021-11-23 13:06:56,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/data/c07f028d6/9647dae9e255465baebb33789fa2185c/FLAGd0a288a42 [2021-11-23 13:06:57,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/data/c07f028d6/9647dae9e255465baebb33789fa2185c [2021-11-23 13:06:57,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:06:57,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:06:57,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:57,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:06:57,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:06:57,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f156ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57, skipping insertion in model container [2021-11-23 13:06:57,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:06:57,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:57,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2021-11-23 13:06:57,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:57,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:06:57,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2021-11-23 13:06:57,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:57,478 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:06:57,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57 WrapperNode [2021-11-23 13:06:57,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:57,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:57,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:06:57,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:06:57,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,526 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-23 13:06:57,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:57,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:06:57,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:06:57,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:06:57,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:06:57,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:06:57,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:06:57,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:06:57,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (1/1) ... [2021-11-23 13:06:57,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:06:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:57,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:57,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:06:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:06:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:06:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:06:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:06:57,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:06:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:06:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:06:57,750 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:06:57,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:06:58,034 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:06:58,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:06:58,042 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 13:06:58,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:58 BoogieIcfgContainer [2021-11-23 13:06:58,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:06:58,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:06:58,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:06:58,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:06:58,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:06:57" (1/3) ... [2021-11-23 13:06:58,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b88aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:58, skipping insertion in model container [2021-11-23 13:06:58,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:57" (2/3) ... [2021-11-23 13:06:58,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b88aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:06:58, skipping insertion in model container [2021-11-23 13:06:58,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:58" (3/3) ... [2021-11-23 13:06:58,086 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2.c [2021-11-23 13:06:58,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:06:58,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:06:58,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:06:58,210 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 [2021-11-23 13:06:58,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:06:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:06:58,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:58,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:58,256 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:06:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-11-23 13:06:58,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:58,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082096986] [2021-11-23 13:06:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:58,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:58,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:58,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082096986] [2021-11-23 13:06:58,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082096986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:58,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:58,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:06:58,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978531533] [2021-11-23 13:06:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:58,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:06:58,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:06:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:06:58,600 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:58,632 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-23 13:06:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:06:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 13:06:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:58,646 INFO L225 Difference]: With dead ends: 42 [2021-11-23 13:06:58,647 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 13:06:58,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:06:58,658 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:58,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:06:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 13:06:58,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-23 13:06:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-23 13:06:58,716 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-23 13:06:58,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:58,716 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-23 13:06:58,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-23 13:06:58,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:06:58,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:58,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:58,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:06:58,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:06:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-11-23 13:06:58,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:58,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694244466] [2021-11-23 13:06:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:58,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:58,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694244466] [2021-11-23 13:06:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694244466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:58,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:58,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:06:58,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524507023] [2021-11-23 13:06:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:58,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:06:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:58,917 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:59,027 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-23 13:06:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 13:06:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:59,030 INFO L225 Difference]: With dead ends: 45 [2021-11-23 13:06:59,030 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 13:06:59,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:59,033 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:59,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 13:06:59,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-23 13:06:59,041 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) [2021-11-23 13:06:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-23 13:06:59,052 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-23 13:06:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:59,053 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-23 13:06:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-23 13:06:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:06:59,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:59,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:59,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:06:59,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:06:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-11-23 13:06:59,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:59,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443434098] [2021-11-23 13:06:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:59,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:06:59,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121685840] [2021-11-23 13:06:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:59,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:06:59,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:59,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:06:59,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:06:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:59,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:06:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:59,360 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 [2021-11-23 13:06:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:06:59,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:06:59,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:59,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443434098] [2021-11-23 13:06:59,526 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:06:59,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121685840] [2021-11-23 13:06:59,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121685840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:59,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:06:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100255216] [2021-11-23 13:06:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:59,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:06:59,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:06:59,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:06:59,530 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:59,651 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-23 13:06:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:06:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:06:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:06:59,653 INFO L225 Difference]: With dead ends: 40 [2021-11-23 13:06:59,653 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 13:06:59,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:06:59,656 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:06:59,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:06:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 13:06:59,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-11-23 13:06:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2021-11-23 13:06:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-23 13:06:59,664 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-11-23 13:06:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:06:59,665 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-23 13:06:59,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-23 13:06:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 13:06:59,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:06:59,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:59,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 13:06:59,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:06:59,890 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:06:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-11-23 13:06:59,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499237919] [2021-11-23 13:06:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:59,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:59,921 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:06:59,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479263355] [2021-11-23 13:06:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:59,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:06:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:59,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:06:59,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:07:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:00,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:07:00,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:00,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:00,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:00,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499237919] [2021-11-23 13:07:00,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:07:00,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479263355] [2021-11-23 13:07:00,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479263355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:00,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:00,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-23 13:07:00,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296218987] [2021-11-23 13:07:00,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:00,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:07:00,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:07:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:07:00,338 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:00,565 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-23 13:07:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:07:00,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 13:07:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:00,571 INFO L225 Difference]: With dead ends: 70 [2021-11-23 13:07:00,571 INFO L226 Difference]: Without dead ends: 43 [2021-11-23 13:07:00,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:07:00,581 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:00,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:07:00,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-23 13:07:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-11-23 13:07:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-23 13:07:00,596 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-11-23 13:07:00,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:00,596 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-23 13:07:00,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-23 13:07:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 13:07:00,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:00,598 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:00,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:00,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:00,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-11-23 13:07:00,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:00,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537665688] [2021-11-23 13:07:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:00,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:00,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:07:00,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979921576] [2021-11-23 13:07:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:00,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:00,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:00,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:00,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:07:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:00,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:07:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:01,200 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 [2021-11-23 13:07:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:07:01,342 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:07:01,342 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 31 treesize of output 29 [2021-11-23 13:07:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:07:01,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:12,902 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 60 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:07:13,951 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) (let ((.cse1 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2021-11-23 13:07:13,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:07:13,974 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 117 treesize of output 115 [2021-11-23 13:07:14,025 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 42 treesize of output 33 [2021-11-23 13:07:14,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:07:14,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 266 [2021-11-23 13:07:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 1 not checked. [2021-11-23 13:07:14,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:14,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537665688] [2021-11-23 13:07:14,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:07:14,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979921576] [2021-11-23 13:07:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979921576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:14,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-11-23 13:07:14,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735406865] [2021-11-23 13:07:14,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:14,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 13:07:14,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 13:07:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=114, Unknown=5, NotChecked=22, Total=182 [2021-11-23 13:07:14,263 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:14,652 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2021-11-23 13:07:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:07:14,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 13:07:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:14,655 INFO L225 Difference]: With dead ends: 53 [2021-11-23 13:07:14,655 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 13:07:14,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=60, Invalid=179, Unknown=5, NotChecked=28, Total=272 [2021-11-23 13:07:14,657 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:14,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 71 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2021-11-23 13:07:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 13:07:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-11-23 13:07:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-23 13:07:14,679 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2021-11-23 13:07:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:14,680 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-23 13:07:14,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-23 13:07:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:07:14,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:14,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:14,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:14,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:14,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times [2021-11-23 13:07:14,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:14,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690088875] [2021-11-23 13:07:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:14,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:14,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:07:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273362125] [2021-11-23 13:07:14,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:07:14,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:14,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:14,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:07:15,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:07:15,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:07:15,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:07:15,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:15,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:15,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:15,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690088875] [2021-11-23 13:07:15,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:07:15,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273362125] [2021-11-23 13:07:15,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273362125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:07:15,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:07:15,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-23 13:07:15,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488138455] [2021-11-23 13:07:15,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:07:15,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:07:15,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:07:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:07:15,311 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:15,559 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-11-23 13:07:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:07:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 [2021-11-23 13:07:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:15,563 INFO L225 Difference]: With dead ends: 98 [2021-11-23 13:07:15,564 INFO L226 Difference]: Without dead ends: 83 [2021-11-23 13:07:15,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:07:15,565 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 95 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:15,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 59 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:07:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-23 13:07:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2021-11-23 13:07:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-11-23 13:07:15,593 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2021-11-23 13:07:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:15,594 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-11-23 13:07:15,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-11-23 13:07:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:07:15,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:15,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:15,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:15,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:15,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-11-23 13:07:15,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:15,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727157431] [2021-11-23 13:07:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:15,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:15,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:07:15,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915527539] [2021-11-23 13:07:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:15,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:15,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:15,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:15,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:07:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:15,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 13:07:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:15,964 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 [2021-11-23 13:07:15,997 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 [2021-11-23 13:07:16,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:07:16,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-23 13:07:16,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:07:16,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-23 13:07:16,407 INFO L354 Elim1Store]: treesize reduction 106, result has 17.2 percent of original size [2021-11-23 13:07:16,408 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 6 case distinctions, treesize of input 49 treesize of output 46 [2021-11-23 13:07:16,827 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 13:07:16,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 40 [2021-11-23 13:07:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:07:19,519 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~b~0#1.offset| Int)) (= (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |ULTIMATE.start_main_~b~0#1.offset| 1))) (store .cse0 (+ |ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) (let ((.cse1 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) (select .cse0 (+ |ULTIMATE.start_main_~b~0#1.offset| .cse1)))))) (+ |ULTIMATE.start_main_~b~0#1.offset| 8)) 5)) is different from false [2021-11-23 13:07:41,803 WARN L227 SmtUtils]: Spent 13.81s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:08:01,844 WARN L227 SmtUtils]: Spent 12.36s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:08:01,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 60 [2021-11-23 13:08:01,903 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 67 treesize of output 59 [2021-11-23 13:08:01,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 129 [2021-11-23 13:08:01,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2021-11-23 13:08:02,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 127 [2021-11-23 13:08:02,049 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 63 treesize of output 54 [2021-11-23 13:08:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 13:08:02,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:08:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727157431] [2021-11-23 13:08:02,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:08:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915527539] [2021-11-23 13:08:02,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915527539] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:08:02,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:08:02,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-23 13:08:02,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604609342] [2021-11-23 13:08:02,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:08:02,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 13:08:02,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:08:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 13:08:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=373, Unknown=8, NotChecked=40, Total=506 [2021-11-23 13:08:02,265 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:08:15,861 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2021-11-23 13:08:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 13:08:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:08:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:08:15,863 INFO L225 Difference]: With dead ends: 160 [2021-11-23 13:08:15,863 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 13:08:15,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=160, Invalid=706, Unknown=8, NotChecked=56, Total=930 [2021-11-23 13:08:15,866 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:08:15,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 202 Invalid, 0 Unknown, 153 Unchecked, 0.8s Time] [2021-11-23 13:08:15,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 13:08:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2021-11-23 13:08:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2021-11-23 13:08:15,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 28 [2021-11-23 13:08:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:08:15,896 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2021-11-23 13:08:15,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:08:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2021-11-23 13:08:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 13:08:15,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:08:15,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:08:15,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 13:08:16,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:16,126 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:08:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:08:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times [2021-11-23 13:08:16,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:08:16,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397555828] [2021-11-23 13:08:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:08:16,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:08:16,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:08:16,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452194993] [2021-11-23 13:08:16,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:08:16,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:08:16,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:08:16,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:08:16,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:08:16,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 13:08:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:08:16,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 13:08:16,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:08:16,853 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 [2021-11-23 13:08:17,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,055 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-23 13:08:17,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 397 [2021-11-23 13:08:17,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,252 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:08:17,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 180 treesize of output 115 [2021-11-23 13:08:17,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,337 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:08:17,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 232 treesize of output 141 [2021-11-23 13:08:17,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,384 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:08:17,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 220 treesize of output 119 [2021-11-23 13:08:17,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,665 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:08:17,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 254 treesize of output 442 [2021-11-23 13:08:17,774 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:08:17,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:17,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:17,933 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:08:17,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 216 treesize of output 144 [2021-11-23 13:08:18,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,152 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:08:18,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 416 treesize of output 248 [2021-11-23 13:08:18,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:08:18,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:08:18,364 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:08:18,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 296 treesize of output 161 [2021-11-23 13:08:18,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:08:18,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 51 [2021-11-23 13:08:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:08:18,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:08:53,004 WARN L227 SmtUtils]: Spent 30.84s on a formula simplification. DAG size of input: 93 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:09:01,384 WARN L227 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:09:01,455 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:09:01,456 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 1860 treesize of output 1732 [2021-11-23 13:09:01,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:01,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:01,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:01,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:01,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 520 [2021-11-23 13:09:03,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:03,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:03,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:03,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2021-11-23 13:09:03,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:03,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:03,977 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 98 treesize of output 80 [2021-11-23 13:09:04,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 497 [2021-11-23 13:09:04,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:04,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 497 [2021-11-23 13:09:05,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:05,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 497 [2021-11-23 13:09:05,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:05,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 497 [2021-11-23 13:09:06,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:06,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 673 treesize of output 557 [2021-11-23 13:09:06,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:06,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 673 treesize of output 557 [2021-11-23 13:09:07,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:07,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 673 treesize of output 557 [2021-11-23 13:09:08,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:08,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 497 [2021-11-23 13:09:09,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,727 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-23 13:09:09,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 577 treesize of output 431 [2021-11-23 13:09:09,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:09,933 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 2856 treesize of output 2613 [2021-11-23 13:09:10,080 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 13:09:10,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 516 treesize of output 1 [2021-11-23 13:09:10,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 419 [2021-11-23 13:09:10,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:10,486 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:09:10,487 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 1208 treesize of output 1120 [2021-11-23 13:09:10,544 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 13:09:10,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 547 treesize of output 480 [2021-11-23 13:09:10,580 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 13:09:10,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8856 treesize of output 7499 [2021-11-23 13:09:11,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 400 treesize of output 333 [2021-11-23 13:09:11,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 220 [2021-11-23 13:09:11,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 220 [2021-11-23 13:09:11,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,187 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-23 13:09:11,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 781 treesize of output 1 [2021-11-23 13:09:11,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 634 treesize of output 549 [2021-11-23 13:09:11,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 634 treesize of output 549 [2021-11-23 13:09:11,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 634 treesize of output 549 [2021-11-23 13:09:11,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 494 treesize of output 436 [2021-11-23 13:09:11,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 494 treesize of output 436 [2021-11-23 13:09:11,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:11,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 634 treesize of output 549 [2021-11-23 13:09:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 13:09:13,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:13,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397555828] [2021-11-23 13:09:13,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:09:13,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452194993] [2021-11-23 13:09:13,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452194993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:09:13,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:09:13,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 30 [2021-11-23 13:09:13,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512023001] [2021-11-23 13:09:13,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:09:13,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 13:09:13,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 13:09:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=676, Unknown=2, NotChecked=0, Total=870 [2021-11-23 13:09:13,939 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 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) [2021-11-23 13:09:33,350 WARN L227 SmtUtils]: Spent 12.47s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:09:43,786 WARN L227 SmtUtils]: Spent 8.32s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:09:56,580 WARN L227 SmtUtils]: Spent 10.49s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:09:57,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:09:57,572 INFO L93 Difference]: Finished difference Result 188 states and 230 transitions. [2021-11-23 13:09:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 13:09:57,573 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 13:09:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:09:57,575 INFO L225 Difference]: With dead ends: 188 [2021-11-23 13:09:57,575 INFO L226 Difference]: Without dead ends: 134 [2021-11-23 13:09:57,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 87.4s TimeCoverageRelationStatistics Valid=451, Invalid=1612, Unknown=7, NotChecked=0, Total=2070 [2021-11-23 13:09:57,578 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:09:57,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 117 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 318 Invalid, 0 Unknown, 163 Unchecked, 0.6s Time] [2021-11-23 13:09:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-23 13:09:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2021-11-23 13:09:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 110 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2021-11-23 13:09:57,596 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 30 [2021-11-23 13:09:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:09:57,597 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2021-11-23 13:09:57,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 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) [2021-11-23 13:09:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2021-11-23 13:09:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 13:09:57,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:09:57,600 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:09:57,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:09:57,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:57,826 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:09:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 2 times [2021-11-23 13:09:57,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:57,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012849643] [2021-11-23 13:09:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:57,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:57,859 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:09:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686714123] [2021-11-23 13:09:57,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:09:57,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:09:57,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:57,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:09:57,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:09:58,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:09:58,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:09:58,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 13:09:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:09:58,153 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 [2021-11-23 13:09:58,188 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 [2021-11-23 13:09:58,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-23 13:09:58,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 46 [2021-11-23 13:09:58,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 45 [2021-11-23 13:09:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 39 [2021-11-23 13:09:58,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2021-11-23 13:09:58,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2021-11-23 13:09:58,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:58,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:58,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:58,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:58,943 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-23 13:09:58,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 270 treesize of output 510 [2021-11-23 13:09:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 174 [2021-11-23 13:09:59,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:09:59,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 10 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 199 [2021-11-23 13:09:59,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,329 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:09:59,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 113 [2021-11-23 13:09:59,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:09:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:09:59,572 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-23 13:09:59,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 85 treesize of output 70 [2021-11-23 13:09:59,975 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-23 13:09:59,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137 treesize of output 61 [2021-11-23 13:10:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:00,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:10:13,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:13,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 171222 treesize of output 75004 [2021-11-23 13:10:13,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:13,559 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 75004 treesize of output 72962 [2021-11-23 13:10:19,386 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 415 DAG size of output: 161 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 13:10:19,387 INFO L354 Elim1Store]: treesize reduction 3984, result has 13.6 percent of original size [2021-11-23 13:10:19,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 39 case distinctions, treesize of input 404489 treesize of output 350585 [2021-11-23 13:10:22,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:10:22,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 65 [2021-11-23 13:10:22,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:22,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 97 [2021-11-23 13:10:22,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:22,797 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:22,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 129 [2021-11-23 13:10:23,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:23,188 INFO L244 Elim1Store]: Index analysis took 102 ms [2021-11-23 13:10:23,262 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:23,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 129 [2021-11-23 13:10:32,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:32,738 INFO L354 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2021-11-23 13:10:32,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 201525 treesize of output 188160 [2021-11-23 13:10:34,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,180 INFO L354 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2021-11-23 13:10:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 183 [2021-11-23 13:10:34,391 INFO L354 Elim1Store]: treesize reduction 248, result has 14.8 percent of original size [2021-11-23 13:10:34,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 142 treesize of output 128 [2021-11-23 13:10:34,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,600 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:34,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4676 treesize of output 2164 [2021-11-23 13:10:34,645 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:34,646 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 2164 treesize of output 2090 [2021-11-23 13:10:34,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:34,793 INFO L354 Elim1Store]: treesize reduction 22, result has 76.6 percent of original size [2021-11-23 13:10:34,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 2032 treesize of output 1871 [2021-11-23 13:10:35,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:35,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:36,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:37,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:38,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:10:39,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:10:39,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 68 [2021-11-23 13:10:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:39,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012849643] [2021-11-23 13:10:39,527 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:10:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686714123] [2021-11-23 13:10:39,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686714123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:10:39,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:10:39,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-11-23 13:10:39,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888851834] [2021-11-23 13:10:39,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:10:39,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 13:10:39,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 13:10:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2021-11-23 13:10:39,531 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 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) [2021-11-23 13:10:59,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:11:02,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:11:14,309 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse56 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse57 (* .cse56 8))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse30 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse14 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse57 (- 34359738368)))) (let ((.cse39 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse57)) (.cse38 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse57)) (.cse45 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse19 (select .cse30 .cse14)) (.cse53 (* .cse17 8))) (let ((.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse53)) (.cse32 (+ .cse19 4)) (.cse54 (* 2 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (.cse12 (store .cse1 |c_ULTIMATE.start_main_~b~0#1.offset| 1)) (.cse55 (* .cse45 8)) (.cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse53)) (.cse22 (select .cse1 .cse38)) (.cse23 (select .cse30 .cse39)) (.cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse57 (- 34359738368)))) (let ((.cse6 (<= .cse56 2147483647)) (.cse5 (select .cse1 .cse15)) (.cse20 (store .cse1 .cse2 (+ .cse22 .cse23))) (.cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse55)) (.cse13 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (< 2147483647 .cse56)) (.cse4 (+ .cse54 (* 2 |c_ULTIMATE.start_main_~i~0#1|) 1)) (.cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16)) (.cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse33 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse55)) (.cse44 (store .cse30 .cse11 .cse32)) (.cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse53 (- 34359738368))) (.cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse0 (< 2147483647 .cse17)) (.cse3 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 5 .cse54)) (.cse34 (<= .cse17 2147483647))) (and (or .cse0 (= (select .cse1 .cse2) .cse3)) (or (= .cse4 .cse5) .cse6) (or (not (= |c_ULTIMATE.start_main_~a~0#1.offset| |c_ULTIMATE.start_main_~b~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))) (or (= 5 (select (let ((.cse9 (select .cse12 .cse15)) (.cse10 (select .cse13 .cse14))) (let ((.cse7 (store .cse12 .cse2 (+ .cse9 .cse10)))) (store .cse7 .cse8 (+ .cse9 .cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11))))) .cse16)) .cse6) (= 5 (select .cse1 .cse16)) (not (= (* 8 .cse17) 0)) (or .cse6 (= 5 (select (let ((.cse18 (store .cse1 .cse2 (+ .cse5 .cse19)))) (store .cse18 .cse8 (+ .cse5 .cse19 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11)))) .cse16))) (= 5 (select .cse20 .cse16)) (or .cse21 (= (select (store .cse20 .cse8 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse20) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11) .cse22 .cse23)) .cse16) 5)) (or (= 5 (select (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store .cse30 .cse31 .cse32) .cse33 (+ .cse19 8))))) (let ((.cse29 (store (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse28 (select (select (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| .cse29) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse24 (store .cse29 .cse16 (+ .cse28 1)))) (store .cse24 .cse25 (+ (select (select (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse28 1)))))) .cse16)) .cse34) (or (= (select (let ((.cse36 (select .cse13 .cse39)) (.cse37 (select .cse12 .cse38))) (let ((.cse35 (store .cse12 .cse2 (+ .cse36 .cse37)))) (store .cse35 .cse8 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse35) |c_ULTIMATE.start_main_~a~0#1.base|) .cse11) .cse36 .cse37)))) .cse16) 5) .cse21) (= 5 (select (let ((.cse41 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse44))) (let ((.cse43 (store (select .cse41 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse42 (select (select (store .cse41 |c_ULTIMATE.start_main_~b~0#1.base| .cse43) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse40 (store .cse43 .cse16 (+ .cse42 1)))) (store .cse40 .cse25 (+ (select (select (store .cse41 |c_ULTIMATE.start_main_~b~0#1.base| .cse40) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse42 1)))))) .cse16)) (not (= (* 8 .cse45) 0)) (= 5 (select (let ((.cse47 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse46 (store .cse12 .cse16 (+ .cse47 1)))) (store .cse46 .cse25 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse46) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse47 1)))) .cse16)) (= 5 (select (store .cse1 .cse38 (let ((.cse48 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse48)) (select .cse30 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48))))) .cse16)) (or .cse21 (= .cse4 .cse22)) (or (= 5 (select (let ((.cse51 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse44 .cse33 (+ (select .cse44 .cse31) 4))))) (let ((.cse52 (store (select .cse51 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse50 (select (select (store .cse51 |c_ULTIMATE.start_main_~b~0#1.base| .cse52) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse49 (store .cse52 .cse16 (+ .cse50 1)))) (store .cse49 .cse25 (+ .cse50 (select (select (store .cse51 |c_ULTIMATE.start_main_~b~0#1.base| .cse49) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) 1)))))) .cse16)) .cse0) (or (= (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse53 (- 34359738368))) .cse3) .cse34)))))))) is different from false [2021-11-23 13:11:18,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:11:21,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:11:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:35,041 INFO L93 Difference]: Finished difference Result 270 states and 333 transitions. [2021-11-23 13:11:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-23 13:11:35,042 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 13:11:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:35,043 INFO L225 Difference]: With dead ends: 270 [2021-11-23 13:11:35,043 INFO L226 Difference]: Without dead ends: 196 [2021-11-23 13:11:35,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=479, Invalid=2494, Unknown=1, NotChecked=106, Total=3080 [2021-11-23 13:11:35,047 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 163 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:35,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 175 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 737 Invalid, 2 Unknown, 91 Unchecked, 28.2s Time] [2021-11-23 13:11:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-23 13:11:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2021-11-23 13:11:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2597402597402598) internal successors, (194), 154 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2021-11-23 13:11:35,071 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 34 [2021-11-23 13:11:35,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:35,071 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2021-11-23 13:11:35,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 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) [2021-11-23 13:11:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2021-11-23 13:11:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:11:35,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:35,074 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:35,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:11:35,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:11:35,302 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash 205831847, now seen corresponding path program 4 times [2021-11-23 13:11:35,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:35,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635902767] [2021-11-23 13:11:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:35,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:35,347 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:11:35,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761445812] [2021-11-23 13:11:35,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:11:35,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:11:35,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:11:35,356 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:11:35,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:11:35,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:11:35,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:11:35,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:11:35,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:11:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:11:35,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:11:35,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:11:35,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635902767] [2021-11-23 13:11:35,495 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:11:35,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761445812] [2021-11-23 13:11:35,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761445812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:11:35,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:11:35,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:11:35,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842764856] [2021-11-23 13:11:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:11:35,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:11:35,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:11:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:11:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:11:35,498 INFO L87 Difference]: Start difference. First operand 155 states and 194 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:11:35,615 INFO L93 Difference]: Finished difference Result 280 states and 345 transitions. [2021-11-23 13:11:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:11:35,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 36 [2021-11-23 13:11:35,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:11:35,617 INFO L225 Difference]: With dead ends: 280 [2021-11-23 13:11:35,617 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 13:11:35,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:11:35,619 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:11:35,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 39 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:11:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 13:11:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 105. [2021-11-23 13:11:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-23 13:11:35,635 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 36 [2021-11-23 13:11:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:11:35,636 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-23 13:11:35,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:11:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-23 13:11:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:11:35,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:11:35,638 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:11:35,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:11:35,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 13:11:35,853 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:11:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:11:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1259217666, now seen corresponding path program 5 times [2021-11-23 13:11:35,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:11:35,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677252369] [2021-11-23 13:11:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:11:35,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:11:35,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:11:35,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015737111] [2021-11-23 13:11:35,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:11:35,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:11:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:11:35,883 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:11:35,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:11:37,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-23 13:11:37,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:11:37,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 13:11:37,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:11:37,168 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 [2021-11-23 13:11:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,283 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-23 13:11:37,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 397 [2021-11-23 13:11:37,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,419 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:11:37,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 176 treesize of output 111 [2021-11-23 13:11:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,470 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:11:37,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 204 treesize of output 114 [2021-11-23 13:11:37,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,501 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:11:37,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 158 treesize of output 93 [2021-11-23 13:11:37,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:37,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:37,706 INFO L354 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2021-11-23 13:11:37,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 270 treesize of output 522 [2021-11-23 13:11:38,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,219 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:11:38,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 375 treesize of output 234 [2021-11-23 13:11:38,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,306 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:11:38,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 374 treesize of output 224 [2021-11-23 13:11:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,386 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:11:38,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 306 treesize of output 148 [2021-11-23 13:11:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:11:38,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:11:38,708 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:11:38,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 72 [2021-11-23 13:11:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:11:38,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:13:09,905 WARN L227 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 143 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:14:07,060 WARN L227 SmtUtils]: Spent 19.22s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:14:07,086 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:14:07,087 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 29876 treesize of output 1 [2021-11-23 13:14:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 13:14:07,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:14:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677252369] [2021-11-23 13:14:07,112 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:14:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015737111] [2021-11-23 13:14:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015737111] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:14:07,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:14:07,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2021-11-23 13:14:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235602462] [2021-11-23 13:14:07,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:14:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 13:14:07,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:14:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 13:14:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=377, Unknown=23, NotChecked=0, Total=506 [2021-11-23 13:14:07,114 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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) [2021-11-23 13:14:12,211 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse42 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (let ((.cse41 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse23 (select .cse17 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse42 (- 34359738368)))) (.cse24 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse42 (- 34359738368))))) (let ((.cse25 (+ .cse23 .cse24)) (.cse40 (* .cse41 8)) (.cse16 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse6 (< 2147483647 .cse41)) (.cse7 (<= .cse41 2147483647)) (.cse19 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* .cse16 8))) (.cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse40 (- 34359738368))) (.cse20 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse40 (- 34359738368))) (.cse18 (store .cse17 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse40) .cse25))) (and (or (and (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse1 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse0 (let ((.cse3 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (let ((.cse2 (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3) (let ((.cse5 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5 (- 34359738368))))))))) (store .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse3 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse2) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse3 (- 34359738368))))))))) (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse1 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse0) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse6) (or .cse7 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse9 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse8 (let ((.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse15 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (let ((.cse11 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse12 (select .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse15 (- 34359738368)))) (.cse13 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse15 (- 34359738368))))) (let ((.cse10 (store .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse11 (- 34359738368)) (+ .cse12 .cse13)))) (store .cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse9) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse11 (- 34359738368))) .cse12 .cse13))))))) (store .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse9 (- 34359738368))) (select .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse9 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< 2147483647 .cse16)) (= 1 (select .cse17 |c_ULTIMATE.start_main_~b~0#1.offset|)) (or (= (select (store .cse18 .cse19 (+ (select .cse18 .cse20) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) .cse21))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) .cse6) (or .cse7 (= (select (let ((.cse22 (store .cse17 .cse20 .cse25))) (store .cse22 .cse19 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) .cse21) .cse23 .cse24))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (= (select .cse18 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (or (<= .cse16 2147483647) (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse33 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse34 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (let ((.cse32 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse29 (select .cse33 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse34 (- 34359738368)))) (.cse30 (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34 (- 34359738368))))) (let ((.cse31 (store .cse33 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse32 (- 34359738368)) (+ .cse29 .cse30)))) (let ((.cse28 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) (.cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse31) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse32 (- 34359738368))))) (let ((.cse26 (store .cse31 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse28 (- 34359738368)) (+ .cse27 .cse29 .cse30)))) (store .cse26 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) (+ .cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse26) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28 (- 34359738368))) .cse29 .cse30))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (exists ((|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse37 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse35 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse38 (select .cse35 0)) (.cse39 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse36 (select .cse37 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16)))) (and (= (+ (select .cse35 16) .cse36) (select .cse37 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24))) (= (select .cse37 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ .cse38 .cse39)) (= (+ (select .cse35 8) .cse38 .cse39) .cse36)))))))))) is different from false [2021-11-23 13:15:21,903 WARN L227 SmtUtils]: Spent 47.92s on a formula simplification. DAG size of input: 96 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:16:18,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:16:18,043 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2021-11-23 13:16:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 13:16:18,044 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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 36 [2021-11-23 13:16:18,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:16:18,046 INFO L225 Difference]: With dead ends: 174 [2021-11-23 13:16:18,046 INFO L226 Difference]: Without dead ends: 172 [2021-11-23 13:16:18,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 273.4s TimeCoverageRelationStatistics Valid=289, Invalid=920, Unknown=55, NotChecked=68, Total=1332 [2021-11-23 13:16:18,048 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 163 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:16:18,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 220 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 406 Invalid, 0 Unknown, 121 Unchecked, 2.5s Time] [2021-11-23 13:16:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-23 13:16:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 97. [2021-11-23 13:16:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 96 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:16:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2021-11-23 13:16:18,066 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 36 [2021-11-23 13:16:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:16:18,067 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2021-11-23 13:16:18,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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) [2021-11-23 13:16:18,067 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2021-11-23 13:16:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:16:18,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:16:18,069 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:16:18,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:16:18,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 13:16:18,276 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:16:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:16:18,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1247413058, now seen corresponding path program 3 times [2021-11-23 13:16:18,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:16:18,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774400763] [2021-11-23 13:16:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:16:18,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:16:18,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:16:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592302207] [2021-11-23 13:16:18,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:16:18,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:16:18,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:16:18,299 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:16:18,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 13:16:18,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 13:16:18,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:16:18,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:16:18,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:16:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:16:18,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:16:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 13:16:19,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:16:19,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774400763] [2021-11-23 13:16:19,027 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:16:19,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592302207] [2021-11-23 13:16:19,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592302207] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:16:19,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:16:19,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-23 13:16:19,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028804419] [2021-11-23 13:16:19,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:16:19,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:16:19,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:16:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:16:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:16:19,030 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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) [2021-11-23 13:16:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:16:19,426 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-11-23 13:16:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 13:16:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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 41 [2021-11-23 13:16:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:16:19,428 INFO L225 Difference]: With dead ends: 191 [2021-11-23 13:16:19,429 INFO L226 Difference]: Without dead ends: 135 [2021-11-23 13:16:19,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-11-23 13:16:19,430 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 127 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:16:19,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 98 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:16:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-23 13:16:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2021-11-23 13:16:19,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.153061224489796) internal successors, (113), 98 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:16:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2021-11-23 13:16:19,448 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 41 [2021-11-23 13:16:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:16:19,449 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2021-11-23 13:16:19,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 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) [2021-11-23 13:16:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2021-11-23 13:16:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:16:19,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:16:19,450 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:16:19,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:16:19,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:16:19,657 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:16:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:16:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1382073640, now seen corresponding path program 4 times [2021-11-23 13:16:19,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:16:19,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124594053] [2021-11-23 13:16:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:16:19,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:16:19,686 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:16:19,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996223137] [2021-11-23 13:16:19,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:16:19,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:16:19,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:16:19,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:16:19,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 13:16:19,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:16:19,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:16:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:16:19,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:16:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:16:20,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:16:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 51 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 13:16:20,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:16:20,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124594053] [2021-11-23 13:16:20,219 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:16:20,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996223137] [2021-11-23 13:16:20,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996223137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:16:20,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:16:20,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-11-23 13:16:20,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776127034] [2021-11-23 13:16:20,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:16:20,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 13:16:20,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:16:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 13:16:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-23 13:16:20,221 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-11-23 13:16:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:16:21,358 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2021-11-23 13:16:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:16:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 13:16:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:16:21,360 INFO L225 Difference]: With dead ends: 188 [2021-11-23 13:16:21,360 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 13:16:21,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=457, Invalid=1183, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 13:16:21,362 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 204 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:16:21,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 267 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:16:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 13:16:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 85. [2021-11-23 13:16:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.119047619047619) internal successors, (94), 84 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:16:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2021-11-23 13:16:21,377 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 43 [2021-11-23 13:16:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:16:21,378 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2021-11-23 13:16:21,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 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) [2021-11-23 13:16:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2021-11-23 13:16:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 13:16:21,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:16:21,380 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:16:21,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:16:21,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:16:21,606 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:16:21,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:16:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1596358930, now seen corresponding path program 5 times [2021-11-23 13:16:21,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:16:21,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739861269] [2021-11-23 13:16:21,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:16:21,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:16:21,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:16:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509117240] [2021-11-23 13:16:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:16:21,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:16:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:16:21,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:16:21,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f66b5105-8d6f-4d7b-b64c-097a602e95f6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 13:16:22,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-23 13:16:22,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:16:22,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-23 13:16:22,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:16:22,409 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 [2021-11-23 13:16:22,436 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 [2021-11-23 13:16:22,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:22,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-23 13:16:22,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:16:22,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:16:22,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 49 [2021-11-23 13:16:22,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 83 [2021-11-23 13:16:22,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 25 [2021-11-23 13:16:22,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:22,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:22,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 276 [2021-11-23 13:16:22,956 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:16:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 56 [2021-11-23 13:16:23,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 75 [2021-11-23 13:16:23,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 67 [2021-11-23 13:16:23,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 48 [2021-11-23 13:16:23,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-23 13:16:23,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:23,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:23,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:23,733 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-23 13:16:23,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 38 case distinctions, treesize of input 263 treesize of output 545 [2021-11-23 13:16:23,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:16:24,045 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 13:16:24,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,211 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:16:24,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 257 treesize of output 159 [2021-11-23 13:16:24,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 189 [2021-11-23 13:16:24,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,330 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 13:16:24,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 17 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 263 treesize of output 110 [2021-11-23 13:16:24,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,687 INFO L354 Elim1Store]: treesize reduction 75, result has 20.2 percent of original size [2021-11-23 13:16:24,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 38 case distinctions, treesize of input 304 treesize of output 582 [2021-11-23 13:16:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:24,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 146 [2021-11-23 13:16:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 289 treesize of output 170 [2021-11-23 13:16:25,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,217 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 13:16:25,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 17 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 26 case distinctions, treesize of input 302 treesize of output 124 [2021-11-23 13:16:25,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:16:25,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:16:25,542 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-23 13:16:25,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 96 treesize of output 91 [2021-11-23 13:16:26,337 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-23 13:16:26,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 136 treesize of output 60 [2021-11-23 13:16:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:16:26,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:17:45,980 INFO L354 Elim1Store]: treesize reduction 167, result has 18.9 percent of original size [2021-11-23 13:17:45,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 116929998 treesize of output 80283124 [2021-11-23 13:21:06,913 WARN L227 SmtUtils]: Spent 3.35m on a formula simplification that was a NOOP. DAG size: 3447 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 13:21:07,204 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:21:07,209 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 80283124 treesize of output 77096432