./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e161bf665c83935d804e4a6c9c0991c63b86e29f86a0454f154d0af3adfb44c2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:50:27,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:50:27,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:50:27,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:50:27,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:50:27,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:50:27,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:50:27,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:50:27,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:50:27,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:50:27,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:50:27,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:50:27,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:50:27,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:50:27,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:50:27,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:50:27,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:50:27,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:50:27,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:50:27,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:50:27,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:50:27,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:50:27,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:50:27,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:50:27,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:50:27,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:50:27,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:50:27,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:50:27,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:50:27,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:50:27,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:50:27,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:50:27,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:50:27,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:50:27,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:50:27,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:50:27,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:50:27,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:50:27,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:50:27,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:50:27,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:50:27,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:50:27,801 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:50:27,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:50:27,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:50:27,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:50:27,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:50:27,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:50:27,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:50:27,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:50:27,814 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:50:27,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:50:27,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:50:27,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:50:27,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:50:27,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:50:27,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:50:27,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:50:27,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:50:27,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:50:27,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:50:27,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:50:27,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:50:27,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:27,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:50:27,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:50:27,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:50:27,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:50:27,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:50:27,820 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:50:27,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:50:27,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:50:27,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:50:27,822 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_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e161bf665c83935d804e4a6c9c0991c63b86e29f86a0454f154d0af3adfb44c2 [2021-11-13 18:50:28,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:50:28,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:50:28,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:50:28,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:50:28,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:50:28,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-13 18:50:28,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/data/418632234/51a254d2b38c4b1896c9872a7d424fbe/FLAG683090750 [2021-11-13 18:50:29,311 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:50:29,313 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-13 18:50:29,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/data/418632234/51a254d2b38c4b1896c9872a7d424fbe/FLAG683090750 [2021-11-13 18:50:29,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/data/418632234/51a254d2b38c4b1896c9872a7d424fbe [2021-11-13 18:50:29,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:50:29,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:50:29,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:29,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:50:29,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:50:29,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:29" (1/1) ... [2021-11-13 18:50:29,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e328d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:29, skipping insertion in model container [2021-11-13 18:50:29,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:50:29" (1/1) ... [2021-11-13 18:50:29,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:50:29,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:50:33,358 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341124,341137] [2021-11-13 18:50:33,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:33,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:50:34,416 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/sv-benchmarks/c/ldv-commit-tester/main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i[341124,341137] [2021-11-13 18:50:34,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:50:34,732 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:50:34,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34 WrapperNode [2021-11-13 18:50:34,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:50:34,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:34,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:50:34,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:50:34,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:34,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:50:35,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:50:35,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:50:35,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:50:35,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:50:35,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:50:35,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:50:35,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:50:35,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (1/1) ... [2021-11-13 18:50:35,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:50:35,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:50:35,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:50:35,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:50:35,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-13 18:50:35,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-13 18:50:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-13 18:50:35,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:50:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:50:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-11-13 18:50:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-11-13 18:50:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-13 18:50:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-13 18:50:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_fmt [2021-11-13 18:50:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_fmt [2021-11-13 18:50:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure set_tuner_mode [2021-11-13 18:50:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure set_tuner_mode [2021-11-13 18:50:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-13 18:50:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-13 18:50:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:50:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:50:35,624 INFO L130 BoogieDeclarations]: Found specification of procedure check_control_id [2021-11-13 18:50:35,624 INFO L138 BoogieDeclarations]: Found implementation of procedure check_control_id [2021-11-13 18:50:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 18:50:35,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 18:50:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:50:35,625 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-13 18:50:35,625 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-13 18:50:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure set_frequency [2021-11-13 18:50:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure set_frequency [2021-11-13 18:50:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-13 18:50:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-13 18:50:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-11-13 18:50:35,626 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-11-13 18:50:35,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:50:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:50:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:50:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_transfer_stop [2021-11-13 18:50:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_transfer_stop [2021-11-13 18:50:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 18:50:35,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 18:50:35,627 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 18:50:35,628 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 18:50:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-13 18:50:35,628 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-13 18:50:35,628 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_stream [2021-11-13 18:50:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_stream [2021-11-13 18:50:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-13 18:50:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-13 18:50:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:50:35,629 INFO L130 BoogieDeclarations]: Found specification of procedure get_audio_std [2021-11-13 18:50:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure get_audio_std [2021-11-13 18:50:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_poseidon [2021-11-13 18:50:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_poseidon [2021-11-13 18:50:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:50:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:50:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:50:35,630 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:50:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_poseidon [2021-11-13 18:50:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_poseidon [2021-11-13 18:50:35,631 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_release [2021-11-13 18:50:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_release [2021-11-13 18:50:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_open [2021-11-13 18:50:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_open [2021-11-13 18:50:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-13 18:50:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-13 18:50:35,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-13 18:50:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-13 18:50:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure send_set_req [2021-11-13 18:50:35,634 INFO L138 BoogieDeclarations]: Found implementation of procedure send_set_req [2021-11-13 18:50:35,634 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-13 18:50:35,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-13 18:50:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-13 18:50:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-13 18:50:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-13 18:50:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-13 18:50:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_bulk_urbs_generic [2021-11-13 18:50:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_bulk_urbs_generic [2021-11-13 18:50:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:50:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:50:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-13 18:50:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-13 18:50:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 18:50:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 18:50:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:50:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:50:35,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-11-13 18:50:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-11-13 18:50:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-13 18:50:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-13 18:50:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-13 18:50:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-13 18:50:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb [2021-11-13 18:50:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb [2021-11-13 18:50:35,638 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 18:50:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 18:50:35,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:50:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:50:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-13 18:50:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-13 18:50:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-13 18:50:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-13 18:50:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure pd_vidioc_s_tuner [2021-11-13 18:50:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_vidioc_s_tuner [2021-11-13 18:50:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:50:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 18:50:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 18:50:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure set_std [2021-11-13 18:50:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure set_std [2021-11-13 18:50:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:50:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urb_generic [2021-11-13 18:50:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urb_generic [2021-11-13 18:50:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:50:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:50:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:50:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_stop [2021-11-13 18:50:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_stop [2021-11-13 18:50:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-13 18:50:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-13 18:50:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-13 18:50:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-13 18:50:35,644 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-13 18:50:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-13 18:50:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure send_get_req [2021-11-13 18:50:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure send_get_req [2021-11-13 18:50:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 18:50:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 18:50:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:50:35,649 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:50:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:50:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:50:35,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:50:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure pd_video_checkmode [2021-11-13 18:50:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pd_video_checkmode [2021-11-13 18:50:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-13 18:50:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-13 18:50:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-13 18:50:35,657 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-13 18:50:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_vmalloc_init [2021-11-13 18:50:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_vmalloc_init [2021-11-13 18:50:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:50:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure set_debug_mode [2021-11-13 18:50:35,658 INFO L138 BoogieDeclarations]: Found implementation of procedure set_debug_mode [2021-11-13 18:50:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 18:50:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 18:54:33,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:54:33,164 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:54:33,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:33 BoogieIcfgContainer [2021-11-13 18:54:33,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:54:33,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:54:33,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:54:33,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:54:33,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:50:29" (1/3) ... [2021-11-13 18:54:33,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f4d362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:33, skipping insertion in model container [2021-11-13 18:54:33,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:50:34" (2/3) ... [2021-11-13 18:54:33,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f4d362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:33, skipping insertion in model container [2021-11-13 18:54:33,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:33" (3/3) ... [2021-11-13 18:54:33,178 INFO L111 eAbstractionObserver]: Analyzing ICFG main0_drivers-media-video-tlg2300-poseidon-ko--32_7a--4a349aa-1.i [2021-11-13 18:54:33,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:54:33,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:54:33,263 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:54:33,282 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:54:33,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:54:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 944 states, 670 states have (on average 1.3597014925373134) internal successors, (911), 682 states have internal predecessors, (911), 210 states have call successors, (210), 62 states have call predecessors, (210), 62 states have return successors, (210), 209 states have call predecessors, (210), 210 states have call successors, (210) [2021-11-13 18:54:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:54:33,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:54:33,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:54:33,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:54:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:54:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2090032356, now seen corresponding path program 1 times [2021-11-13 18:54:33,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:54:33,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394576398] [2021-11-13 18:54:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:54:33,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:54:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:54:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:54:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:54:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:54:34,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:54:34,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394576398] [2021-11-13 18:54:34,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394576398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:54:34,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:54:34,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:54:34,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370774750] [2021-11-13 18:54:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:54:34,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:54:34,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:54:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:54:34,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:54:34,715 INFO L87 Difference]: Start difference. First operand has 944 states, 670 states have (on average 1.3597014925373134) internal successors, (911), 682 states have internal predecessors, (911), 210 states have call successors, (210), 62 states have call predecessors, (210), 62 states have return successors, (210), 209 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:54:36,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:39,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:42,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:45,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:48,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:54:49,717 INFO L93 Difference]: Finished difference Result 1954 states and 2789 transitions. [2021-11-13 18:54:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:54:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 18:54:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:54:49,754 INFO L225 Difference]: With dead ends: 1954 [2021-11-13 18:54:49,754 INFO L226 Difference]: Without dead ends: 1010 [2021-11-13 18:54:49,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:54:49,771 INFO L933 BasicCegarLoop]: 1196 mSDtfsCounter, 1154 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 308 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13893.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.81ms SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14651.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:54:49,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 1829 Invalid, 1020 Unknown, 0 Unchecked, 46.81ms Time], IncrementalHoareTripleChecker [308 Valid, 707 Invalid, 5 Unknown, 0 Unchecked, 14651.35ms Time] [2021-11-13 18:54:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2021-11-13 18:54:49,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1003. [2021-11-13 18:54:49,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 716 states have (on average 1.3463687150837989) internal successors, (964), 725 states have internal predecessors, (964), 214 states have call successors, (214), 74 states have call predecessors, (214), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:54:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1386 transitions. [2021-11-13 18:54:49,961 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1386 transitions. Word has length 12 [2021-11-13 18:54:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:54:49,962 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1386 transitions. [2021-11-13 18:54:49,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:54:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1386 transitions. [2021-11-13 18:54:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-13 18:54:49,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:54:49,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:54:49,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:54:49,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:54:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:54:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash -367903860, now seen corresponding path program 1 times [2021-11-13 18:54:49,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:54:49,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298116233] [2021-11-13 18:54:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:54:49,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:54:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:54:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:54:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:54:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:54:50,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:54:50,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298116233] [2021-11-13 18:54:50,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298116233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:54:50,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:54:50,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:54:50,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441286959] [2021-11-13 18:54:50,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:54:50,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:54:50,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:54:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:54:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:54:50,707 INFO L87 Difference]: Start difference. First operand 1003 states and 1386 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:54:52,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:55,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:59,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:54:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:54:59,785 INFO L93 Difference]: Finished difference Result 1009 states and 1391 transitions. [2021-11-13 18:54:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:54:59,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-13 18:54:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:54:59,797 INFO L225 Difference]: With dead ends: 1009 [2021-11-13 18:54:59,797 INFO L226 Difference]: Without dead ends: 1006 [2021-11-13 18:54:59,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:54:59,801 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 1421 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 390 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8430.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.87ms SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8868.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:54:59,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 1576 Invalid, 809 Unknown, 0 Unchecked, 21.87ms Time], IncrementalHoareTripleChecker [390 Valid, 416 Invalid, 3 Unknown, 0 Unchecked, 8868.89ms Time] [2021-11-13 18:54:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-13 18:54:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1002. [2021-11-13 18:54:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 716 states have (on average 1.344972067039106) internal successors, (963), 724 states have internal predecessors, (963), 213 states have call successors, (213), 74 states have call predecessors, (213), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:54:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1384 transitions. [2021-11-13 18:54:59,900 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1384 transitions. Word has length 13 [2021-11-13 18:54:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:54:59,901 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1384 transitions. [2021-11-13 18:54:59,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:54:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1384 transitions. [2021-11-13 18:54:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-13 18:54:59,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:54:59,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:54:59,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:54:59,906 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:54:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:54:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1478476831, now seen corresponding path program 1 times [2021-11-13 18:54:59,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:54:59,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782827955] [2021-11-13 18:54:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:54:59,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:00,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:00,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782827955] [2021-11-13 18:55:00,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782827955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:00,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:00,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:55:00,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200661638] [2021-11-13 18:55:00,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:00,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:55:00,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:00,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:55:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:55:00,627 INFO L87 Difference]: Start difference. First operand 1002 states and 1384 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:02,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:04,878 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:09,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:09,815 INFO L93 Difference]: Finished difference Result 1008 states and 1389 transitions. [2021-11-13 18:55:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:55:09,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-13 18:55:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:09,826 INFO L225 Difference]: With dead ends: 1008 [2021-11-13 18:55:09,826 INFO L226 Difference]: Without dead ends: 1005 [2021-11-13 18:55:09,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:55:09,836 INFO L933 BasicCegarLoop]: 1114 mSDtfsCounter, 1418 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 388 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8619.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.82ms SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9018.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:09,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1575 Invalid, 806 Unknown, 0 Unchecked, 19.82ms Time], IncrementalHoareTripleChecker [388 Valid, 415 Invalid, 3 Unknown, 0 Unchecked, 9018.12ms Time] [2021-11-13 18:55:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2021-11-13 18:55:09,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1001. [2021-11-13 18:55:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 716 states have (on average 1.3435754189944134) internal successors, (962), 723 states have internal predecessors, (962), 212 states have call successors, (212), 74 states have call predecessors, (212), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:55:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1382 transitions. [2021-11-13 18:55:09,911 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1382 transitions. Word has length 14 [2021-11-13 18:55:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:09,911 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1382 transitions. [2021-11-13 18:55:09,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1382 transitions. [2021-11-13 18:55:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:55:09,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:09,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:09,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:55:09,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:09,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1413259025, now seen corresponding path program 1 times [2021-11-13 18:55:09,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:09,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835285318] [2021-11-13 18:55:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:09,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:10,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:10,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835285318] [2021-11-13 18:55:10,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835285318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:10,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:10,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:55:10,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141285242] [2021-11-13 18:55:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:10,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:55:10,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:55:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:55:10,601 INFO L87 Difference]: Start difference. First operand 1001 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:12,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:14,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:18,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:19,726 INFO L93 Difference]: Finished difference Result 1007 states and 1387 transitions. [2021-11-13 18:55:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:55:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 18:55:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:19,738 INFO L225 Difference]: With dead ends: 1007 [2021-11-13 18:55:19,738 INFO L226 Difference]: Without dead ends: 1004 [2021-11-13 18:55:19,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:55:19,746 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 1415 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 386 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8470.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.00ms SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8959.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:19,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1574 Invalid, 803 Unknown, 0 Unchecked, 17.00ms Time], IncrementalHoareTripleChecker [386 Valid, 414 Invalid, 3 Unknown, 0 Unchecked, 8959.75ms Time] [2021-11-13 18:55:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-11-13 18:55:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1000. [2021-11-13 18:55:19,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 716 states have (on average 1.3421787709497206) internal successors, (961), 722 states have internal predecessors, (961), 211 states have call successors, (211), 74 states have call predecessors, (211), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:55:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1380 transitions. [2021-11-13 18:55:19,827 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1380 transitions. Word has length 15 [2021-11-13 18:55:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:19,827 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1380 transitions. [2021-11-13 18:55:19,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1380 transitions. [2021-11-13 18:55:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 18:55:19,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:19,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:19,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:55:19,830 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:19,831 INFO L85 PathProgramCache]: Analyzing trace with hash -862752478, now seen corresponding path program 1 times [2021-11-13 18:55:19,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:19,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75657839] [2021-11-13 18:55:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:19,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:20,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:20,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75657839] [2021-11-13 18:55:20,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75657839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:20,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:20,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:55:20,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201867762] [2021-11-13 18:55:20,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:20,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:55:20,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:20,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:55:20,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:55:20,439 INFO L87 Difference]: Start difference. First operand 1000 states and 1380 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:22,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:24,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:28,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:29,492 INFO L93 Difference]: Finished difference Result 1006 states and 1385 transitions. [2021-11-13 18:55:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:55:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-13 18:55:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:29,502 INFO L225 Difference]: With dead ends: 1006 [2021-11-13 18:55:29,502 INFO L226 Difference]: Without dead ends: 997 [2021-11-13 18:55:29,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:55:29,504 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 1412 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 384 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8497.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.68ms SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8901.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:29,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1573 Invalid, 800 Unknown, 0 Unchecked, 16.68ms Time], IncrementalHoareTripleChecker [384 Valid, 413 Invalid, 3 Unknown, 0 Unchecked, 8901.52ms Time] [2021-11-13 18:55:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-13 18:55:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2021-11-13 18:55:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 711 states have (on average 1.3417721518987342) internal successors, (954), 716 states have internal predecessors, (954), 209 states have call successors, (209), 73 states have call predecessors, (209), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:55:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1371 transitions. [2021-11-13 18:55:29,578 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1371 transitions. Word has length 16 [2021-11-13 18:55:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:29,578 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1371 transitions. [2021-11-13 18:55:29,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:55:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1371 transitions. [2021-11-13 18:55:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-13 18:55:29,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:29,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:29,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:55:29,595 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1003721069, now seen corresponding path program 1 times [2021-11-13 18:55:29,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:29,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036258775] [2021-11-13 18:55:29,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:29,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:55:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:55:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:55:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:30,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:30,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036258775] [2021-11-13 18:55:30,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036258775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:30,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:30,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:55:30,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459595164] [2021-11-13 18:55:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:30,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:55:30,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:55:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:55:30,485 INFO L87 Difference]: Start difference. First operand 993 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:55:32,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:34,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:36,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:39,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:42,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:45,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:46,780 INFO L93 Difference]: Finished difference Result 1000 states and 1377 transitions. [2021-11-13 18:55:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:55:46,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2021-11-13 18:55:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:46,799 INFO L225 Difference]: With dead ends: 1000 [2021-11-13 18:55:46,799 INFO L226 Difference]: Without dead ends: 997 [2021-11-13 18:55:46,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:55:46,801 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 748 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 314 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15397.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.09ms SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16110.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:46,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 2790 Invalid, 1106 Unknown, 0 Unchecked, 21.09ms Time], IncrementalHoareTripleChecker [314 Valid, 787 Invalid, 5 Unknown, 0 Unchecked, 16110.35ms Time] [2021-11-13 18:55:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-13 18:55:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2021-11-13 18:55:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 711 states have (on average 1.340365682137834) internal successors, (953), 716 states have internal predecessors, (953), 209 states have call successors, (209), 73 states have call predecessors, (209), 72 states have return successors, (208), 207 states have call predecessors, (208), 207 states have call successors, (208) [2021-11-13 18:55:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1370 transitions. [2021-11-13 18:55:46,865 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1370 transitions. Word has length 51 [2021-11-13 18:55:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:46,866 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1370 transitions. [2021-11-13 18:55:46,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:55:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1370 transitions. [2021-11-13 18:55:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 18:55:46,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:46,874 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:46,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:55:46,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1646907692, now seen corresponding path program 1 times [2021-11-13 18:55:46,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:46,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547351379] [2021-11-13 18:55:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:46,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-13 18:55:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 18:55:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-13 18:55:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 18:55:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 18:55:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:55:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 18:55:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:55:49,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:49,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547351379] [2021-11-13 18:55:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547351379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:55:49,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850420925] [2021-11-13 18:55:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:49,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:55:49,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:55:49,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:55:49,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29e8b513-261a-41a3-ae7e-2decee516e14/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:55:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:53,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 5992 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-13 18:55:53,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:55:53,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-13 18:55:53,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-13 18:55:59,948 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|send_set_req_~#data~0.offset| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_send_set_req_~#data~0.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_int)| |c_send_set_req_~#data~0.base|) |send_set_req_~#data~0.offset| 0) (+ |send_set_req_~#data~0.offset| 1) 0) (+ 2 |send_set_req_~#data~0.offset|) 0) (+ 3 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 4) 0) (+ 5 |send_set_req_~#data~0.offset|) 0) (+ 6 |send_set_req_~#data~0.offset|) 0) (+ 7 |send_set_req_~#data~0.offset|) 0) (+ 8 |send_set_req_~#data~0.offset|) 0) (+ 9 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 10) 0) (+ |send_set_req_~#data~0.offset| 11) 0) (+ |send_set_req_~#data~0.offset| 12) 0) (+ |send_set_req_~#data~0.offset| 13) 0) (+ 14 |send_set_req_~#data~0.offset|) 0) (+ 15 |send_set_req_~#data~0.offset|) 0) (+ 16 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 17) 0) (+ |send_set_req_~#data~0.offset| 18) 0) (+ 19 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 20) 0) (+ 21 |send_set_req_~#data~0.offset|) 0) (+ 22 |send_set_req_~#data~0.offset|) 0) (+ 23 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 24) 0) (+ |send_set_req_~#data~0.offset| 25) 0) (+ |send_set_req_~#data~0.offset| 26) 0) (+ |send_set_req_~#data~0.offset| 27) 0) (+ |send_set_req_~#data~0.offset| 28) 0) (+ 29 |send_set_req_~#data~0.offset|) 0) (+ 30 |send_set_req_~#data~0.offset|) 0) (+ 31 |send_set_req_~#data~0.offset|) 0)))) (= (select |c_old(#valid)| |c_send_set_req_~#data~0.base|) 0) (= (store |c_old(#valid)| |c_send_set_req_~#data~0.base| 1) |c_#valid|)) is different from false [2021-11-13 18:56:18,153 WARN L838 $PredicateComparison]: unable to prove that (exists ((|send_set_req_~#data~0.offset| Int) (|v_send_set_req_~#data~0.base_14| Int)) (and (= (select |c_old(#valid)| |v_send_set_req_~#data~0.base_14|) 0) (= (store |c_old(#valid)| |v_send_set_req_~#data~0.base_14| 0) |c_#valid|) (= |c_#memory_int| (store |c_old(#memory_int)| |v_send_set_req_~#data~0.base_14| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_int)| |v_send_set_req_~#data~0.base_14|) |send_set_req_~#data~0.offset| 0) (+ |send_set_req_~#data~0.offset| 1) 0) (+ 2 |send_set_req_~#data~0.offset|) 0) (+ 3 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 4) 0) (+ 5 |send_set_req_~#data~0.offset|) 0) (+ 6 |send_set_req_~#data~0.offset|) 0) (+ 7 |send_set_req_~#data~0.offset|) 0) (+ 8 |send_set_req_~#data~0.offset|) 0) (+ 9 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 10) 0) (+ |send_set_req_~#data~0.offset| 11) 0) (+ |send_set_req_~#data~0.offset| 12) 0) (+ |send_set_req_~#data~0.offset| 13) 0) (+ 14 |send_set_req_~#data~0.offset|) 0) (+ 15 |send_set_req_~#data~0.offset|) 0) (+ 16 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 17) 0) (+ |send_set_req_~#data~0.offset| 18) 0) (+ 19 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 20) 0) (+ 21 |send_set_req_~#data~0.offset|) 0) (+ 22 |send_set_req_~#data~0.offset|) 0) (+ 23 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 24) 0) (+ |send_set_req_~#data~0.offset| 25) 0) (+ |send_set_req_~#data~0.offset| 26) 0) (+ |send_set_req_~#data~0.offset| 27) 0) (+ |send_set_req_~#data~0.offset| 28) 0) (+ 29 |send_set_req_~#data~0.offset|) 0) (+ 30 |send_set_req_~#data~0.offset|) 0) (+ 31 |send_set_req_~#data~0.offset|) 0))))) is different from false [2021-11-13 18:56:58,218 WARN L227 SmtUtils]: Spent 23.73s on a formula simplification. DAG size of input: 1787 DAG size of output: 134 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 18:56:58,232 INFO L354 Elim1Store]: treesize reduction 51360, result has 0.6 percent of original size [2021-11-13 18:56:58,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 32 case distinctions, treesize of input 190 treesize of output 313 [2021-11-13 18:56:58,309 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-13 18:56:58,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 310 treesize of output 310 [2021-11-13 18:57:15,913 WARN L838 $PredicateComparison]: unable to prove that (exists ((|send_set_req_~#data~0.base| Int) (|send_set_req_~#data~0.offset| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |send_set_req_~#data~0.base| (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (select |c_old(#memory_int)| |send_set_req_~#data~0.base|) |send_set_req_~#data~0.offset| 0) (+ |send_set_req_~#data~0.offset| 1) 0) (+ 2 |send_set_req_~#data~0.offset|) 0) (+ 3 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 4) 0) (+ 5 |send_set_req_~#data~0.offset|) 0) (+ 6 |send_set_req_~#data~0.offset|) 0) (+ 7 |send_set_req_~#data~0.offset|) 0) (+ 8 |send_set_req_~#data~0.offset|) 0) (+ 9 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 10) 0) (+ |send_set_req_~#data~0.offset| 11) 0) (+ |send_set_req_~#data~0.offset| 12) 0) (+ |send_set_req_~#data~0.offset| 13) 0) (+ 14 |send_set_req_~#data~0.offset|) 0) (+ 15 |send_set_req_~#data~0.offset|) 0) (+ 16 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 17) 0) (+ |send_set_req_~#data~0.offset| 18) 0) (+ 19 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 20) 0) (+ 21 |send_set_req_~#data~0.offset|) 0) (+ 22 |send_set_req_~#data~0.offset|) 0) (+ 23 |send_set_req_~#data~0.offset|) 0) (+ |send_set_req_~#data~0.offset| 24) 0) (+ |send_set_req_~#data~0.offset| 25) 0) (+ |send_set_req_~#data~0.offset| 26) 0) (+ |send_set_req_~#data~0.offset| 27) 0) (+ |send_set_req_~#data~0.offset| 28) 0) (+ 29 |send_set_req_~#data~0.offset|) 0) (+ 30 |send_set_req_~#data~0.offset|) 0) (+ 31 |send_set_req_~#data~0.offset|) 0))) (= (select |c_old(#valid)| |send_set_req_~#data~0.base|) 0))) is different from false [2021-11-13 19:03:07,208 WARN L227 SmtUtils]: Spent 5.44m on a formula simplification. DAG size of input: 8193 DAG size of output: 265 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 19:03:07,210 INFO L354 Elim1Store]: treesize reduction 264800, result has 0.2 percent of original size [2021-11-13 19:03:07,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 592 case distinctions, treesize of input 475 treesize of output 694 [2021-11-13 19:03:07,368 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-13 19:03:07,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 595 treesize of output 597 [2021-11-13 19:03:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2021-11-13 19:03:13,213 INFO L328 TraceCheckSpWp]: Computing backward predicates...