./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y --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 5805614faff907ef6adf6c59906ce41481de02c5b77e55fb631cc39640689370 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:44:09,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:44:09,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:44:09,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:44:09,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:44:09,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:44:09,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:44:09,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:44:09,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:44:09,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:44:09,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:44:09,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:44:09,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:44:09,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:44:09,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:44:09,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:44:09,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:44:09,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:44:09,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:44:09,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:44:09,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:44:09,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:44:09,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:44:09,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:44:09,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:44:09,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:44:09,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:44:09,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:44:09,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:44:09,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:44:09,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:44:09,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:44:09,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:44:09,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:44:09,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:44:09,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:44:09,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:44:09,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:44:09,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:44:09,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:44:09,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:44:09,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:44:09,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:44:09,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:44:09,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:44:09,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:44:09,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:44:09,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:44:09,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:44:09,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:44:09,630 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:44:09,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:44:09,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:44:09,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:44:09,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:44:09,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:44:09,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:44:09,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:44:09,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:44:09,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:44:09,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:44:09,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:44:09,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:44:09,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:44:09,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:44:09,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:44:09,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:44:09,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:44:09,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:44:09,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:44:09,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:44:09,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:44:09,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:44:09,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:44:09,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:44:09,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:44:09,640 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_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5805614faff907ef6adf6c59906ce41481de02c5b77e55fb631cc39640689370 [2021-11-13 18:44:09,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:44:10,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:44:10,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:44:10,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:44:10,015 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:44:10,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-fpi/ss3.c [2021-11-13 18:44:10,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/data/c1c287474/d8528f0cdbe549329a1ca5de65e5498e/FLAGa296849fb [2021-11-13 18:44:10,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:44:10,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/sv-benchmarks/c/array-fpi/ss3.c [2021-11-13 18:44:10,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/data/c1c287474/d8528f0cdbe549329a1ca5de65e5498e/FLAGa296849fb [2021-11-13 18:44:10,970 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/data/c1c287474/d8528f0cdbe549329a1ca5de65e5498e [2021-11-13 18:44:10,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:44:10,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:44:10,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:44:10,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:44:10,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:44:10,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:10" (1/1) ... [2021-11-13 18:44:10,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc764b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:10, skipping insertion in model container [2021-11-13 18:44:10,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:44:10" (1/1) ... [2021-11-13 18:44:11,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:44:11,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:44:11,263 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/sv-benchmarks/c/array-fpi/ss3.c[586,599] [2021-11-13 18:44:11,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:44:11,322 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:44:11,343 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/sv-benchmarks/c/array-fpi/ss3.c[586,599] [2021-11-13 18:44:11,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:44:11,368 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:44:11,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11 WrapperNode [2021-11-13 18:44:11,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:44:11,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:44:11,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:44:11,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:44:11,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:44:11,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:44:11,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:44:11,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:44:11,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:44:11,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:44:11,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:44:11,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:44:11,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (1/1) ... [2021-11-13 18:44:11,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:44:11,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:11,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:44:11,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:44:11,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:44:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:44:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:44:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:44:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:44:11,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:44:11,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:44:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:44:11,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:44:11,891 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 18:44:11,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:44:11 BoogieIcfgContainer [2021-11-13 18:44:11,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:44:11,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:44:11,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:44:11,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:44:11,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:44:10" (1/3) ... [2021-11-13 18:44:11,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ae9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:44:11, skipping insertion in model container [2021-11-13 18:44:11,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:44:11" (2/3) ... [2021-11-13 18:44:11,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6ae9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:44:11, skipping insertion in model container [2021-11-13 18:44:11,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:44:11" (3/3) ... [2021-11-13 18:44:11,904 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3.c [2021-11-13 18:44:11,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:44:11,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:44:12,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:44:12,019 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 [2021-11-13 18:44:12,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:44:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:44:12,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:12,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:12,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2021-11-13 18:44:12,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:12,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754901826] [2021-11-13 18:44:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:12,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:12,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:12,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754901826] [2021-11-13 18:44:12,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754901826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:12,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:12,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:44:12,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591246399] [2021-11-13 18:44:12,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:12,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:44:12,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:44:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:44:12,272 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:12,290 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2021-11-13 18:44:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:44:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-13 18:44:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:12,304 INFO L225 Difference]: With dead ends: 50 [2021-11-13 18:44:12,305 INFO L226 Difference]: Without dead ends: 23 [2021-11-13 18:44:12,309 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 [2021-11-13 18:44:12,315 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:12,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:44:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-13 18:44:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-13 18:44:12,359 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) [2021-11-13 18:44:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-13 18:44:12,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2021-11-13 18:44:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:12,364 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-13 18:44:12,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-13 18:44:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:44:12,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:12,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:12,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:44:12,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2021-11-13 18:44:12,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:12,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156114920] [2021-11-13 18:44:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:12,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:12,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:12,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156114920] [2021-11-13 18:44:12,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156114920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:44:12,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:44:12,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:44:12,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499678728] [2021-11-13 18:44:12,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:44:12,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:44:12,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:44:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:44:12,565 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:12,689 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-11-13 18:44:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:44:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-13 18:44:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:12,692 INFO L225 Difference]: With dead ends: 49 [2021-11-13 18:44:12,692 INFO L226 Difference]: Without dead ends: 33 [2021-11-13 18:44:12,698 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 [2021-11-13 18:44:12,700 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:12,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 13 Invalid, 49 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 98.81ms Time] [2021-11-13 18:44:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-13 18:44:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-11-13 18:44:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-13 18:44:12,723 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-11-13 18:44:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:12,725 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-13 18:44:12,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-13 18:44:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 18:44:12,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:12,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:12,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:44:12,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2021-11-13 18:44:12,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:12,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390819014] [2021-11-13 18:44:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:12,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:12,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:44:12,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687863524] [2021-11-13 18:44:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:12,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:12,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:44:12,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:44:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:44:12,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:44:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:44:13,218 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 [2021-11-13 18:44:13,247 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 [2021-11-13 18:44:13,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:44:13,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-13 18:44:13,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-11-13 18:44:14,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-13 18:44:14,178 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-13 18:44:14,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 27 [2021-11-13 18:44:14,446 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-13 18:44:14,447 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 66 treesize of output 46 [2021-11-13 18:44:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:14,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:44:15,861 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 116 treesize of output 114 [2021-11-13 18:44:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:16,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:16,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390819014] [2021-11-13 18:44:16,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:44:16,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687863524] [2021-11-13 18:44:16,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687863524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:44:16,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:44:16,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 29 [2021-11-13 18:44:16,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610200759] [2021-11-13 18:44:16,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:44:16,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-13 18:44:16,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-13 18:44:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-11-13 18:44:16,150 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 29 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) [2021-11-13 18:44:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:23,316 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2021-11-13 18:44:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-13 18:44:23,317 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 29 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 27 [2021-11-13 18:44:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:23,319 INFO L225 Difference]: With dead ends: 72 [2021-11-13 18:44:23,319 INFO L226 Difference]: Without dead ends: 62 [2021-11-13 18:44:23,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=489, Invalid=2163, Unknown=0, NotChecked=0, Total=2652 [2021-11-13 18:44:23,323 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1808.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 1979.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:23,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 84 Invalid, 633 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [120 Valid, 463 Invalid, 0 Unknown, 50 Unchecked, 1979.40ms Time] [2021-11-13 18:44:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-13 18:44:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2021-11-13 18:44:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-11-13 18:44:23,340 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 27 [2021-11-13 18:44:23,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:23,341 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-11-13 18:44:23,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 29 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) [2021-11-13 18:44:23,341 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-11-13 18:44:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-13 18:44:23,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:23,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:23,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:44:23,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:23,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:23,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1190930620, now seen corresponding path program 2 times [2021-11-13 18:44:23,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:23,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949320845] [2021-11-13 18:44:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:23,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:23,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:44:23,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81381017] [2021-11-13 18:44:23,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:44:23,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:23,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:23,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:44:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:44:23,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:44:23,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:44:23,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:44:23,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:44:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:44:23,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:44:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:44:23,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:23,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949320845] [2021-11-13 18:44:23,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:44:23,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81381017] [2021-11-13 18:44:23,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81381017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:44:23,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:44:23,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-13 18:44:23,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626492938] [2021-11-13 18:44:23,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:44:23,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:44:23,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:44:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:44:23,920 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:24,183 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2021-11-13 18:44:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:44:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-13 18:44:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:24,185 INFO L225 Difference]: With dead ends: 109 [2021-11-13 18:44:24,185 INFO L226 Difference]: Without dead ends: 65 [2021-11-13 18:44:24,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:44:24,188 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 88 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:24,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 28 Invalid, 180 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [80 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 201.74ms Time] [2021-11-13 18:44:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-13 18:44:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2021-11-13 18:44:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-11-13 18:44:24,216 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 29 [2021-11-13 18:44:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:24,217 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-11-13 18:44:24,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-11-13 18:44:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-13 18:44:24,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:24,219 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:24,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:44:24,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:24,420 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:24,420 INFO L85 PathProgramCache]: Analyzing trace with hash 264308668, now seen corresponding path program 3 times [2021-11-13 18:44:24,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:24,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891641882] [2021-11-13 18:44:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:24,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:24,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:44:24,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625771908] [2021-11-13 18:44:24,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:44:24,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:24,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:44:24,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:44:24,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 18:44:24,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:44:24,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:44:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:44:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:44:24,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:44:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:44:24,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:24,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891641882] [2021-11-13 18:44:24,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:44:24,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625771908] [2021-11-13 18:44:24,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625771908] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:44:24,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:44:24,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-13 18:44:24,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69454446] [2021-11-13 18:44:24,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:44:24,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:44:24,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:44:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:44:24,792 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:44:25,019 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-11-13 18:44:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:44:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-13 18:44:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:44:25,022 INFO L225 Difference]: With dead ends: 58 [2021-11-13 18:44:25,022 INFO L226 Difference]: Without dead ends: 42 [2021-11-13 18:44:25,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:44:25,024 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:44:25,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 24 Invalid, 150 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [45 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 160.49ms Time] [2021-11-13 18:44:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-13 18:44:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-11-13 18:44:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-13 18:44:25,047 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2021-11-13 18:44:25,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:44:25,047 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-13 18:44:25,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:44:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-13 18:44:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 18:44:25,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:44:25,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:44:25,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:44:25,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:25,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:44:25,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:44:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash 982389828, now seen corresponding path program 4 times [2021-11-13 18:44:25,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:44:25,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418979985] [2021-11-13 18:44:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:44:25,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:44:25,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:44:25,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525097600] [2021-11-13 18:44:25,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:44:25,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:44:25,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:44:25,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:44:25,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:44:25,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:44:25,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:44:25,369 WARN L261 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-13 18:44:25,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:44:25,393 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 [2021-11-13 18:44:25,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:44:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,507 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 [2021-11-13 18:44:25,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:44:25,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-13 18:44:25,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2021-11-13 18:44:25,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:25,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:44:25,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2021-11-13 18:44:26,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-13 18:44:26,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:44:26,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2021-11-13 18:44:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-11-13 18:44:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:44:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:44:26,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-11-13 18:44:27,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:44:27,070 INFO L354 Elim1Store]: treesize reduction 131, result has 12.1 percent of original size [2021-11-13 18:44:27,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 41 [2021-11-13 18:44:27,437 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-13 18:44:27,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 50 [2021-11-13 18:44:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:27,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:44:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:44:40,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:44:40,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418979985] [2021-11-13 18:44:40,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:44:40,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525097600] [2021-11-13 18:44:40,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525097600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:44:40,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:44:40,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 47 [2021-11-13 18:44:40,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472721247] [2021-11-13 18:44:40,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:44:40,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-13 18:44:40,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:44:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-13 18:44:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-11-13 18:44:40,462 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 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) [2021-11-13 18:46:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:27,433 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2021-11-13 18:46:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-13 18:46:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 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 37 [2021-11-13 18:46:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:27,436 INFO L225 Difference]: With dead ends: 102 [2021-11-13 18:46:27,436 INFO L226 Difference]: Without dead ends: 97 [2021-11-13 18:46:27,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 112.3s TimeCoverageRelationStatistics Valid=495, Invalid=5663, Unknown=4, NotChecked=0, Total=6162 [2021-11-13 18:46:27,440 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6178.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.31ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 6911.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:27,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 134 Invalid, 1238 Unknown, 0 Unchecked, 9.31ms Time], IncrementalHoareTripleChecker [120 Valid, 821 Invalid, 0 Unknown, 297 Unchecked, 6911.47ms Time] [2021-11-13 18:46:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-13 18:46:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2021-11-13 18:46:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.170731707317073) internal successors, (96), 82 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2021-11-13 18:46:27,458 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 37 [2021-11-13 18:46:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:27,459 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2021-11-13 18:46:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 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) [2021-11-13 18:46:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2021-11-13 18:46:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 18:46:27,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:27,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:27,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:27,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:27,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -762945914, now seen corresponding path program 5 times [2021-11-13 18:46:27,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:27,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022698461] [2021-11-13 18:46:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:27,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:27,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:46:27,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882202132] [2021-11-13 18:46:27,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:46:27,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:27,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:27,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:46:27,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-13 18:46:27,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:46:27,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:46:27,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:46:28,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 18:46:28,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:28,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022698461] [2021-11-13 18:46:28,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:46:28,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882202132] [2021-11-13 18:46:28,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882202132] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:46:28,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:46:28,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-13 18:46:28,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810264590] [2021-11-13 18:46:28,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:46:28,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:46:28,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:46:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:46:28,144 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:28,456 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2021-11-13 18:46:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:46:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-13 18:46:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:28,457 INFO L225 Difference]: With dead ends: 163 [2021-11-13 18:46:28,458 INFO L226 Difference]: Without dead ends: 90 [2021-11-13 18:46:28,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:46:28,459 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 86 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 252.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:28,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 39 Invalid, 259 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [89 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 252.84ms Time] [2021-11-13 18:46:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-13 18:46:28,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2021-11-13 18:46:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-11-13 18:46:28,476 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 39 [2021-11-13 18:46:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:28,476 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-11-13 18:46:28,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-11-13 18:46:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-13 18:46:28,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:28,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:28,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:28,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:28,692 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash -703482232, now seen corresponding path program 6 times [2021-11-13 18:46:28,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:28,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386169221] [2021-11-13 18:46:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:28,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:46:28,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399823063] [2021-11-13 18:46:28,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 18:46:28,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:28,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:28,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:46:28,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-13 18:46:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:46:28,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:46:28,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 18:46:28,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:46:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 18:46:29,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:46:29,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386169221] [2021-11-13 18:46:29,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:46:29,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399823063] [2021-11-13 18:46:29,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399823063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:46:29,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:46:29,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-13 18:46:29,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948420767] [2021-11-13 18:46:29,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:46:29,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 18:46:29,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:46:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 18:46:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:46:29,137 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:46:29,465 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-11-13 18:46:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:46:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-13 18:46:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:46:29,467 INFO L225 Difference]: With dead ends: 84 [2021-11-13 18:46:29,467 INFO L226 Difference]: Without dead ends: 62 [2021-11-13 18:46:29,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-13 18:46:29,468 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 53 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 224.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:46:29,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 28 Invalid, 227 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [50 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 224.46ms Time] [2021-11-13 18:46:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-13 18:46:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-11-13 18:46:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-11-13 18:46:29,480 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 41 [2021-11-13 18:46:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:46:29,480 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-11-13 18:46:29,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:46:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-11-13 18:46:29,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 18:46:29,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:46:29,483 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:46:29,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:46:29,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:46:29,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:46:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:46:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1373102066, now seen corresponding path program 7 times [2021-11-13 18:46:29,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:46:29,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452204329] [2021-11-13 18:46:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:46:29,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:46:29,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:46:29,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496571559] [2021-11-13 18:46:29,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 18:46:29,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:46:29,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:46:29,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:46:29,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:46:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:46:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-13 18:46:29,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:46:29,835 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 [2021-11-13 18:46:29,841 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 [2021-11-13 18:46:29,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:46:29,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:29,924 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 35 treesize of output 37 [2021-11-13 18:46:30,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,039 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 39 treesize of output 44 [2021-11-13 18:46:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:30,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-13 18:46:30,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:30,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-11-13 18:46:30,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2021-11-13 18:46:30,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:30,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:30,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2021-11-13 18:46:31,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:31,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2021-11-13 18:46:31,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2021-11-13 18:46:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:31,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2021-11-13 18:46:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:31,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 49 [2021-11-13 18:46:31,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:31,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2021-11-13 18:46:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:32,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-11-13 18:46:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:46:32,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:46:32,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 56 [2021-11-13 18:46:32,571 INFO L354 Elim1Store]: treesize reduction 114, result has 16.2 percent of original size [2021-11-13 18:46:32,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 71 treesize of output 52 [2021-11-13 18:46:32,806 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-13 18:46:32,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 55 [2021-11-13 18:46:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:46:32,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:52:01,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:01,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452204329] [2021-11-13 18:52:01,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:01,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496571559] [2021-11-13 18:52:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496571559] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:01,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 67 [2021-11-13 18:52:01,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454397740] [2021-11-13 18:52:01,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:01,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-13 18:52:01,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-13 18:52:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=4093, Unknown=34, NotChecked=0, Total=4422 [2021-11-13 18:52:01,545 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 67 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:55:04,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:06,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:07,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:09,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:12,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:17,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:19,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:55:59,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:56:01,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:56:06,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:56:09,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:57:36,306 WARN L227 SmtUtils]: Spent 13.55s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:57:38,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 18:57:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:38,371 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-11-13 18:57:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-13 18:57:38,371 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-13 18:57:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:38,372 INFO L225 Difference]: With dead ends: 105 [2021-11-13 18:57:38,372 INFO L226 Difference]: Without dead ends: 91 [2021-11-13 18:57:38,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 595.6s TimeCoverageRelationStatistics Valid=466, Invalid=6278, Unknown=62, NotChecked=0, Total=6806 [2021-11-13 18:57:38,376 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 118 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59994.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.06ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 309 IncrementalHoareTripleChecker+Unchecked, 65844.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:38,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 171 Invalid, 1979 Unknown, 0 Unchecked, 12.06ms Time], IncrementalHoareTripleChecker [118 Valid, 1549 Invalid, 3 Unknown, 309 Unchecked, 65844.87ms Time] [2021-11-13 18:57:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-13 18:57:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2021-11-13 18:57:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.118421052631579) internal successors, (85), 76 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2021-11-13 18:57:38,396 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 47 [2021-11-13 18:57:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:38,397 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2021-11-13 18:57:38,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2021-11-13 18:57:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 18:57:38,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:38,400 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:38,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-13 18:57:38,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:38,611 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -942891056, now seen corresponding path program 8 times [2021-11-13 18:57:38,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:38,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816440582] [2021-11-13 18:57:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:38,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:38,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:57:38,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19168862] [2021-11-13 18:57:38,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:57:38,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:38,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:38,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:57:38,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:57:38,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:57:38,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 18:57:38,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:57:38,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:57:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:57:39,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:39,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816440582] [2021-11-13 18:57:39,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:57:39,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19168862] [2021-11-13 18:57:39,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19168862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:57:39,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:57:39,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-13 18:57:39,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198846518] [2021-11-13 18:57:39,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:57:39,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:57:39,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:57:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:57:39,092 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:39,582 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-11-13 18:57:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:57:39,583 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-13 18:57:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:39,584 INFO L225 Difference]: With dead ends: 172 [2021-11-13 18:57:39,584 INFO L226 Difference]: Without dead ends: 97 [2021-11-13 18:57:39,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-13 18:57:39,586 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 114 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 391.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 42 Invalid, 329 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [113 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 391.50ms Time] [2021-11-13 18:57:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-13 18:57:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2021-11-13 18:57:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 79 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-11-13 18:57:39,603 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 49 [2021-11-13 18:57:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:39,603 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-11-13 18:57:39,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-11-13 18:57:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 18:57:39,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:39,605 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:39,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-13 18:57:39,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:39,820 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:39,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:39,820 INFO L85 PathProgramCache]: Analyzing trace with hash 449756880, now seen corresponding path program 9 times [2021-11-13 18:57:39,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:39,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512447454] [2021-11-13 18:57:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:39,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:39,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:57:39,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902166109] [2021-11-13 18:57:39,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:57:39,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:39,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:39,856 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:39,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:57:40,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-13 18:57:40,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:57:40,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 18:57:40,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:57:40,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:57:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:57:40,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:40,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512447454] [2021-11-13 18:57:40,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:57:40,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902166109] [2021-11-13 18:57:40,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902166109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:57:40,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:57:40,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-13 18:57:40,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247596683] [2021-11-13 18:57:40,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:57:40,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:57:40,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:57:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:57:40,464 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:41,017 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-11-13 18:57:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:57:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-13 18:57:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:41,021 INFO L225 Difference]: With dead ends: 90 [2021-11-13 18:57:41,022 INFO L226 Difference]: Without dead ends: 62 [2021-11-13 18:57:41,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:57:41,025 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 117 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 292.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:41,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 24 Invalid, 319 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [113 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 389.94ms Time] [2021-11-13 18:57:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-13 18:57:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-13 18:57:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-11-13 18:57:41,042 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 49 [2021-11-13 18:57:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:41,042 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-11-13 18:57:41,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:57:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-11-13 18:57:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:57:41,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:41,044 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:41,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:57:41,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:41,265 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:41,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1464682664, now seen corresponding path program 10 times [2021-11-13 18:57:41,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:41,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988182594] [2021-11-13 18:57:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:41,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:41,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:57:41,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42140238] [2021-11-13 18:57:41,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:57:41,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:41,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:41,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cde62595-385f-4ff5-ac94-fdaf8523a471/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:57:41,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:57:41,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:57:41,391 WARN L261 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-13 18:57:41,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:41,416 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 [2021-11-13 18:57:41,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 18:57:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,589 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 35 treesize of output 37 [2021-11-13 18:57:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,744 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 47 treesize of output 52 [2021-11-13 18:57:41,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:41,955 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 48 treesize of output 56 [2021-11-13 18:57:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-11-13 18:57:42,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 66 [2021-11-13 18:57:42,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:42,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:42,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 73 [2021-11-13 18:57:43,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-11-13 18:57:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 63 [2021-11-13 18:57:43,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:43,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:43,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 64 [2021-11-13 18:57:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:44,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 59 [2021-11-13 18:57:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 57 [2021-11-13 18:57:44,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:44,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 63 [2021-11-13 18:57:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:45,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2021-11-13 18:57:45,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:45,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2021-11-13 18:57:45,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:45,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 59 [2021-11-13 18:57:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-11-13 18:57:46,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:46,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:46,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-11-13 18:57:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 18:57:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:57:47,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2021-11-13 18:57:47,705 INFO L354 Elim1Store]: treesize reduction 152, result has 16.0 percent of original size [2021-11-13 18:57:47,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 79 treesize of output 63 [2021-11-13 18:57:48,028 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-13 18:57:48,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 56 [2021-11-13 18:57:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:57:48,226 INFO L328 TraceCheckSpWp]: Computing backward predicates...