./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:59:31,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:59:31,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:59:31,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:59:31,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:59:31,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:59:31,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:59:31,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:59:31,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:59:31,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:59:31,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:59:31,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:59:31,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:59:31,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:59:31,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:59:31,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:59:31,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:59:31,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:59:31,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:59:31,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:59:31,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:59:31,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:59:31,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:59:31,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:59:31,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:59:31,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:59:31,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:59:31,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:59:31,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:59:31,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:59:31,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:59:31,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:59:31,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:59:31,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:59:31,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:59:31,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:59:31,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:59:31,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:59:31,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:59:31,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:59:31,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:59:31,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:59:31,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:59:31,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:59:31,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:59:31,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:59:31,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:59:31,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:59:31,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:59:31,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:59:31,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:59:31,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:59:31,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:59:31,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:59:31,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:59:31,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:59:31,682 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:59:31,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:59:31,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:59:31,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:59:31,682 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_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2021-12-06 20:59:31,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:59:31,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:59:31,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:59:31,890 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:59:31,890 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:59:31,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2021-12-06 20:59:31,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/data/abb6975a8/89cfff34e1d24969874d94b93c2f53a7/FLAG211117039 [2021-12-06 20:59:32,317 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:59:32,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/sv-benchmarks/c/reducercommutativity/max10-1.i [2021-12-06 20:59:32,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/data/abb6975a8/89cfff34e1d24969874d94b93c2f53a7/FLAG211117039 [2021-12-06 20:59:32,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/data/abb6975a8/89cfff34e1d24969874d94b93c2f53a7 [2021-12-06 20:59:32,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:59:32,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:59:32,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:59:32,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:59:32,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:59:32,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7edcba11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32, skipping insertion in model container [2021-12-06 20:59:32,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:59:32,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:59:32,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-12-06 20:59:32,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:59:32,497 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:59:32,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2021-12-06 20:59:32,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:59:32,521 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:59:32,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32 WrapperNode [2021-12-06 20:59:32,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:59:32,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:59:32,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:59:32,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:59:32,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,547 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2021-12-06 20:59:32,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:59:32,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:59:32,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:59:32,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:59:32,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:59:32,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:59:32,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:59:32,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:59:32,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (1/1) ... [2021-12-06 20:59:32,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:59:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:32,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:59:32,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:59:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:59:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-12-06 20:59:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-12-06 20:59:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:59:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:59:32,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:59:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:59:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:59:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:59:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:59:32,672 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:59:32,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:59:32,778 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:59:32,784 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:59:32,784 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 20:59:32,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:59:32 BoogieIcfgContainer [2021-12-06 20:59:32,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:59:32,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:59:32,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:59:32,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:59:32,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:59:32" (1/3) ... [2021-12-06 20:59:32,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa3e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:59:32, skipping insertion in model container [2021-12-06 20:59:32,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:59:32" (2/3) ... [2021-12-06 20:59:32,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa3e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:59:32, skipping insertion in model container [2021-12-06 20:59:32,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:59:32" (3/3) ... [2021-12-06 20:59:32,795 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2021-12-06 20:59:32,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:59:32,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:59:32,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:59:32,847 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:59:32,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:59:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 20:59:32,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:32,865 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:32,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2021-12-06 20:59:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:32,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086178523] [2021-12-06 20:59:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:32,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:59:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:32,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:59:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:59:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:59:33,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:33,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086178523] [2021-12-06 20:59:33,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086178523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:59:33,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:59:33,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:59:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69874858] [2021-12-06 20:59:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:59:33,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:59:33,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:33,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:59:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:59:33,044 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:59:33,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:33,058 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2021-12-06 20:59:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:59:33,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-06 20:59:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:33,065 INFO L225 Difference]: With dead ends: 52 [2021-12-06 20:59:33,065 INFO L226 Difference]: Without dead ends: 24 [2021-12-06 20:59:33,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:59:33,071 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:33,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-06 20:59:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-06 20:59:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-12-06 20:59:33,098 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2021-12-06 20:59:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:33,098 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-12-06 20:59:33,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:59:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-12-06 20:59:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 20:59:33,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:33,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:33,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:59:33,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2021-12-06 20:59:33,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:33,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453947065] [2021-12-06 20:59:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:33,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:59:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:59:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:59:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:59:33,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453947065] [2021-12-06 20:59:33,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453947065] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:33,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619227596] [2021-12-06 20:59:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:33,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:33,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:33,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:33,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:59:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:33,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:59:33,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:59:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619227596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:59:33,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:59:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-06 20:59:33,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682564948] [2021-12-06 20:59:33,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:59:33,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:59:33,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:59:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:59:33,298 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:59:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:33,311 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-12-06 20:59:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:59:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-06 20:59:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:33,312 INFO L225 Difference]: With dead ends: 46 [2021-12-06 20:59:33,312 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 20:59:33,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:59:33,314 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:33,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 20:59:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-12-06 20:59:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-12-06 20:59:33,319 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2021-12-06 20:59:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:33,320 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-12-06 20:59:33,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:59:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-12-06 20:59:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 20:59:33,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:33,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:33,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:33,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:33,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2021-12-06 20:59:33,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:33,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161092912] [2021-12-06 20:59:33,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:33,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:59:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:59:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 20:59:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:59:33,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161092912] [2021-12-06 20:59:33,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161092912] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484028017] [2021-12-06 20:59:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:33,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:33,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:59:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:33,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:33,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:59:33,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:59:33,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484028017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:59:33,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:59:33,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-06 20:59:33,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246676115] [2021-12-06 20:59:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:59:33,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:59:33,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:59:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:59:33,814 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:59:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:33,826 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-12-06 20:59:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:59:33,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-06 20:59:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:33,827 INFO L225 Difference]: With dead ends: 48 [2021-12-06 20:59:33,827 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 20:59:33,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:59:33,829 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:33,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 20:59:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-12-06 20:59:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-12-06 20:59:33,836 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2021-12-06 20:59:33,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:33,836 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-12-06 20:59:33,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:59:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-12-06 20:59:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 20:59:33,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:33,838 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:33,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:59:34,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:34,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2021-12-06 20:59:34,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:34,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213621699] [2021-12-06 20:59:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:34,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:59:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:59:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 20:59:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:59:34,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:34,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213621699] [2021-12-06 20:59:34,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213621699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:34,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310638942] [2021-12-06 20:59:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:34,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:34,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:34,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:34,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:59:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:59:34,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:59:34,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:59:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310638942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:59:34,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:59:34,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-06 20:59:34,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249008797] [2021-12-06 20:59:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:59:34,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:59:34,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:59:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:59:34,422 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:59:34,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:34,431 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-12-06 20:59:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:59:34,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2021-12-06 20:59:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:34,432 INFO L225 Difference]: With dead ends: 43 [2021-12-06 20:59:34,433 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 20:59:34,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:59:34,434 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:34,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 20:59:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-12-06 20:59:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-12-06 20:59:34,440 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2021-12-06 20:59:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:34,441 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-12-06 20:59:34,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:59:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-12-06 20:59:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 20:59:34,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:34,443 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:34,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:59:34,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-06 20:59:34,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2021-12-06 20:59:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840581531] [2021-12-06 20:59:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:34,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:59:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:59:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:59:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 20:59:34,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:34,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840581531] [2021-12-06 20:59:34,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840581531] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582484994] [2021-12-06 20:59:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:34,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:34,893 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:34,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:59:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:34,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:59:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 20:59:35,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 20:59:35,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582484994] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:35,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:35,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-06 20:59:35,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564198962] [2021-12-06 20:59:35,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:35,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:59:35,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:59:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:59:35,069 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:59:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:35,105 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-12-06 20:59:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:59:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2021-12-06 20:59:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:35,106 INFO L225 Difference]: With dead ends: 62 [2021-12-06 20:59:35,106 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 20:59:35,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:59:35,108 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:35,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 20:59:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-12-06 20:59:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2021-12-06 20:59:35,115 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2021-12-06 20:59:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2021-12-06 20:59:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:59:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2021-12-06 20:59:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 20:59:35,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:35,117 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:35,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:59:35,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:35,322 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:35,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2021-12-06 20:59:35,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:35,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000529665] [2021-12-06 20:59:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:35,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:59:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:59:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 20:59:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-06 20:59:35,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:35,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000529665] [2021-12-06 20:59:35,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000529665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415974967] [2021-12-06 20:59:35,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:59:35,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:35,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:35,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:59:35,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:59:35,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:35,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:59:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 20:59:35,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-06 20:59:35,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415974967] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:35,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:35,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-12-06 20:59:35,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209156266] [2021-12-06 20:59:35,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:59:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:59:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:59:35,731 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:59:35,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:35,762 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2021-12-06 20:59:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:59:35,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2021-12-06 20:59:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:35,764 INFO L225 Difference]: With dead ends: 78 [2021-12-06 20:59:35,764 INFO L226 Difference]: Without dead ends: 52 [2021-12-06 20:59:35,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:59:35,765 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:35,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-06 20:59:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-12-06 20:59:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-12-06 20:59:35,771 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2021-12-06 20:59:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:35,771 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-12-06 20:59:35,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:59:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-12-06 20:59:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 20:59:35,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:35,773 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:35,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:59:35,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:35,974 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2021-12-06 20:59:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:35,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451431769] [2021-12-06 20:59:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:35,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:59:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:59:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 20:59:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-06 20:59:36,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:36,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451431769] [2021-12-06 20:59:36,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451431769] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:36,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311412814] [2021-12-06 20:59:36,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:59:36,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:36,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:36,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:59:36,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 20:59:36,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:36,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:36,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-06 20:59:36,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-06 20:59:36,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311412814] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:36,306 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:36,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-06 20:59:36,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927362785] [2021-12-06 20:59:36,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:36,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:59:36,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:59:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:59:36,308 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 20:59:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:36,330 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2021-12-06 20:59:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:59:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2021-12-06 20:59:36,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:36,331 INFO L225 Difference]: With dead ends: 94 [2021-12-06 20:59:36,331 INFO L226 Difference]: Without dead ends: 67 [2021-12-06 20:59:36,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:59:36,333 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:36,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-06 20:59:36,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-12-06 20:59:36,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2021-12-06 20:59:36,346 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 76 [2021-12-06 20:59:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:36,346 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2021-12-06 20:59:36,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 20:59:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2021-12-06 20:59:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 20:59:36,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:36,349 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:36,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:59:36,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 20:59:36,550 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -28042803, now seen corresponding path program 4 times [2021-12-06 20:59:36,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:36,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128844990] [2021-12-06 20:59:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:36,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:59:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:59:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:59:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-06 20:59:36,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:36,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128844990] [2021-12-06 20:59:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128844990] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:36,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966726558] [2021-12-06 20:59:36,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:59:36,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:36,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:36,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:36,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:59:36,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:59:36,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:36,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:59:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2021-12-06 20:59:36,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-06 20:59:36,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966726558] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:36,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:36,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-06 20:59:36,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196221970] [2021-12-06 20:59:36,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:36,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:59:36,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:59:36,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:59:36,992 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:59:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:37,025 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2021-12-06 20:59:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:59:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-06 20:59:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:37,027 INFO L225 Difference]: With dead ends: 126 [2021-12-06 20:59:37,027 INFO L226 Difference]: Without dead ends: 83 [2021-12-06 20:59:37,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:59:37,029 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:37,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-06 20:59:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-06 20:59:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2021-12-06 20:59:37,038 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 124 [2021-12-06 20:59:37,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:37,039 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2021-12-06 20:59:37,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:59:37,039 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2021-12-06 20:59:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 20:59:37,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:37,048 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:37,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:59:37,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 20:59:37,250 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash -281100999, now seen corresponding path program 5 times [2021-12-06 20:59:37,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:37,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326965878] [2021-12-06 20:59:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:37,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:59:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:59:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:59:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-12-06 20:59:37,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326965878] [2021-12-06 20:59:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326965878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447883615] [2021-12-06 20:59:37,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:59:37,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:37,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:37,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:37,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:59:37,774 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-12-06 20:59:37,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:37,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:59:37,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2021-12-06 20:59:37,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-12-06 20:59:37,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447883615] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:37,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:37,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-06 20:59:37,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252028229] [2021-12-06 20:59:37,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:37,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:59:37,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:59:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:59:37,993 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:59:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:38,011 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2021-12-06 20:59:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:59:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2021-12-06 20:59:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:38,013 INFO L225 Difference]: With dead ends: 142 [2021-12-06 20:59:38,013 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 20:59:38,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:59:38,014 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:38,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 20:59:38,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-12-06 20:59:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2021-12-06 20:59:38,024 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 172 [2021-12-06 20:59:38,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:38,024 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2021-12-06 20:59:38,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:59:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2021-12-06 20:59:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-06 20:59:38,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:38,027 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:38,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:59:38,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:38,229 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1450203185, now seen corresponding path program 6 times [2021-12-06 20:59:38,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:38,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057639704] [2021-12-06 20:59:38,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:38,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:59:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:59:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 20:59:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-12-06 20:59:38,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057639704] [2021-12-06 20:59:38,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057639704] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810829191] [2021-12-06 20:59:38,394 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:59:38,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:38,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:38,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:59:38,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-12-06 20:59:38,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:59:38,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:59:38,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2021-12-06 20:59:38,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2021-12-06 20:59:38,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810829191] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:38,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:38,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-06 20:59:38,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090674935] [2021-12-06 20:59:38,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:59:38,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:59:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:59:38,974 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:59:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:38,994 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2021-12-06 20:59:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:59:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2021-12-06 20:59:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:38,996 INFO L225 Difference]: With dead ends: 148 [2021-12-06 20:59:38,996 INFO L226 Difference]: Without dead ends: 97 [2021-12-06 20:59:38,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:59:38,997 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:38,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:59:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-06 20:59:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-06 20:59:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:59:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2021-12-06 20:59:39,006 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 180 [2021-12-06 20:59:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:39,006 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2021-12-06 20:59:39,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 20:59:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2021-12-06 20:59:39,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 20:59:39,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:39,008 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:59:39,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:59:39,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 20:59:39,210 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1435992661, now seen corresponding path program 7 times [2021-12-06 20:59:39,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246566958] [2021-12-06 20:59:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:39,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:59:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:59:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:59:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1214 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-12-06 20:59:39,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:39,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246566958] [2021-12-06 20:59:39,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246566958] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:39,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245525041] [2021-12-06 20:59:39,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 20:59:39,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:39,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:39,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:39,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:59:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 167 conjunts are in the unsatisfiable core [2021-12-06 20:59:39,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:42,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:42,671 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:42,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 146 treesize of output 116 [2021-12-06 20:59:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:43,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:44,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 118 [2021-12-06 20:59:44,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:44,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2021-12-06 20:59:44,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:44,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2021-12-06 20:59:44,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:44,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,694 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:44,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 98 [2021-12-06 20:59:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:44,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:44,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:44,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 86 [2021-12-06 20:59:45,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:45,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 74 [2021-12-06 20:59:45,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,306 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:45,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 62 [2021-12-06 20:59:45,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:59:45,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,504 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:45,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 50 [2021-12-06 20:59:45,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,660 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:45,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 30 [2021-12-06 20:59:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:59:45,743 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:59:45,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2021-12-06 20:59:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 8 proven. 1827 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-06 20:59:47,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:00:51,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245525041] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:00:51,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 21:00:51,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 83] total 93 [2021-12-06 21:00:51,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758471994] [2021-12-06 21:00:51,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 21:00:51,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-12-06 21:00:51,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:00:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-12-06 21:00:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=15354, Unknown=23, NotChecked=0, Total=16002 [2021-12-06 21:00:51,990 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 93 states, 91 states have (on average 1.945054945054945) internal successors, (177), 90 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 21:01:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:01:27,502 INFO L93 Difference]: Finished difference Result 694 states and 844 transitions. [2021-12-06 21:01:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2021-12-06 21:01:27,503 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 91 states have (on average 1.945054945054945) internal successors, (177), 90 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 186 [2021-12-06 21:01:27,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:01:27,508 INFO L225 Difference]: With dead ends: 694 [2021-12-06 21:01:27,508 INFO L226 Difference]: Without dead ends: 601 [2021-12-06 21:01:27,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 202 SyntacticMatches, 5 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46559 ImplicationChecksByTransitivity, 98.8s TimeCoverageRelationStatistics Valid=3460, Invalid=126477, Unknown=23, NotChecked=0, Total=129960 [2021-12-06 21:01:27,527 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 229 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 6524 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 15129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 6524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8518 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 21:01:27,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1818 Invalid, 15129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 6524 Invalid, 0 Unknown, 8518 Unchecked, 5.5s Time] [2021-12-06 21:01:27,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-12-06 21:01:27,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 441. [2021-12-06 21:01:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 426 states have (on average 1.2112676056338028) internal successors, (516), 430 states have internal predecessors, (516), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-06 21:01:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 545 transitions. [2021-12-06 21:01:27,557 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 545 transitions. Word has length 186 [2021-12-06 21:01:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:01:27,558 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 545 transitions. [2021-12-06 21:01:27,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 91 states have (on average 1.945054945054945) internal successors, (177), 90 states have internal predecessors, (177), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-06 21:01:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 545 transitions. [2021-12-06 21:01:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 21:01:27,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:01:27,561 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:01:27,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 21:01:27,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:27,762 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:01:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:01:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1427363051, now seen corresponding path program 1 times [2021-12-06 21:01:27,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:01:27,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555634499] [2021-12-06 21:01:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:27,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:01:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 21:01:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:01:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:33,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 21:01:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 33 proven. 1946 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 21:01:34,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:01:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555634499] [2021-12-06 21:01:34,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555634499] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:01:34,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492882781] [2021-12-06 21:01:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:01:34,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:01:34,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:01:34,305 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:01:34,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 21:01:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:01:34,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 239 conjunts are in the unsatisfiable core [2021-12-06 21:01:34,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:01:34,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 21:01:43,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:43,195 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:43,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 177 treesize of output 127 [2021-12-06 21:01:48,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:48,834 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:48,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 121 [2021-12-06 21:01:49,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:49,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 121 [2021-12-06 21:01:49,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:49,662 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:49,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 121 [2021-12-06 21:01:50,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:50,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:50,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:50,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 146 treesize of output 109 [2021-12-06 21:01:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:51,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 97 [2021-12-06 21:01:51,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:51,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:51,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:51,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 85 [2021-12-06 21:01:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:52,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 73 [2021-12-06 21:01:52,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:01:52,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:52,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:52,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 61 [2021-12-06 21:01:53,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:53,287 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:53,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 38 [2021-12-06 21:01:53,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:01:53,537 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:53,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 38 [2021-12-06 21:01:56,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:01:56,274 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 88 treesize of output 56 [2021-12-06 21:01:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 1 proven. 2022 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 21:01:56,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:03:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1876 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 21:03:14,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492882781] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:03:14,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:03:14,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 88] total 280 [2021-12-06 21:03:14,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552919539] [2021-12-06 21:03:14,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:03:14,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 280 states [2021-12-06 21:03:14,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:03:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2021-12-06 21:03:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1910, Invalid=76183, Unknown=27, NotChecked=0, Total=78120 [2021-12-06 21:03:14,217 INFO L87 Difference]: Start difference. First operand 441 states and 545 transitions. Second operand has 280 states, 276 states have (on average 1.6231884057971016) internal successors, (448), 269 states have internal predecessors, (448), 8 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 21:05:31,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:31,732 INFO L93 Difference]: Finished difference Result 1063 states and 1333 transitions. [2021-12-06 21:05:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2021-12-06 21:05:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 280 states, 276 states have (on average 1.6231884057971016) internal successors, (448), 269 states have internal predecessors, (448), 8 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 186 [2021-12-06 21:05:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:31,738 INFO L225 Difference]: With dead ends: 1063 [2021-12-06 21:05:31,738 INFO L226 Difference]: Without dead ends: 1011 [2021-12-06 21:05:31,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 255 SyntacticMatches, 7 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59564 ImplicationChecksByTransitivity, 226.5s TimeCoverageRelationStatistics Valid=3677, Invalid=169746, Unknown=49, NotChecked=0, Total=173472 [2021-12-06 21:05:31,749 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 6456 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 10641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 6456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4147 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:31,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 2137 Invalid, 10641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 6456 Invalid, 0 Unknown, 4147 Unchecked, 7.1s Time] [2021-12-06 21:05:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-12-06 21:05:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 876. [2021-12-06 21:05:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 846 states have (on average 1.2163120567375887) internal successors, (1029), 857 states have internal predecessors, (1029), 13 states have call successors, (13), 6 states have call predecessors, (13), 16 states have return successors, (66), 12 states have call predecessors, (66), 13 states have call successors, (66) [2021-12-06 21:05:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1108 transitions. [2021-12-06 21:05:31,804 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1108 transitions. Word has length 186 [2021-12-06 21:05:31,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:05:31,805 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1108 transitions. [2021-12-06 21:05:31,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 280 states, 276 states have (on average 1.6231884057971016) internal successors, (448), 269 states have internal predecessors, (448), 8 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-06 21:05:31,805 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1108 transitions. [2021-12-06 21:05:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 21:05:31,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:05:31,810 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:31,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 21:05:32,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:32,012 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:05:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash 809272811, now seen corresponding path program 2 times [2021-12-06 21:05:32,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:32,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258276503] [2021-12-06 21:05:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:32,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 21:05:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 21:05:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 21:05:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 454 proven. 1297 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-06 21:05:34,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:34,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258276503] [2021-12-06 21:05:34,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258276503] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:05:34,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057782034] [2021-12-06 21:05:34,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:05:34,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:05:34,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:05:34,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e24c9fc-ff76-4e20-bb2b-6db2a47e1975/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 21:05:34,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 21:05:34,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:05:35,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 167 conjunts are in the unsatisfiable core [2021-12-06 21:05:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:05:41,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:41,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:41,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:41,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 190 treesize of output 156 [2021-12-06 21:05:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:42,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:42,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 131 [2021-12-06 21:05:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:43,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 131 [2021-12-06 21:05:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:43,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:43,689 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:43,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 155 treesize of output 118 [2021-12-06 21:05:44,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:44,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 134 treesize of output 103 [2021-12-06 21:05:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:44,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:44,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:44,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 88 [2021-12-06 21:05:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,368 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:45,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 73 [2021-12-06 21:05:45,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:45,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:45,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:45,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 58 [2021-12-06 21:05:46,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:46,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:46,312 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-06 21:05:46,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 53 [2021-12-06 21:05:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 21:05:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 21:05:46,569 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:05:46,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 41 [2021-12-06 21:05:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 852 proven. 982 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 21:05:50,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:07:47,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 192 [2021-12-06 21:07:47,872 INFO L354 Elim1Store]: treesize reduction 416, result has 0.2 percent of original size [2021-12-06 21:07:47,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 44072988 treesize of output 1 [2021-12-06 21:08:05,138 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 21:08:05,138 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 279 treesize of output 249 [2021-12-06 21:08:05,472 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 21:08:05,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44593840134 treesize of output 44560285700