./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/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_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:37:09,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:37:09,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:37:09,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:37:09,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:37:09,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:37:09,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:37:09,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:37:09,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:37:09,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:37:09,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:37:09,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:37:09,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:37:09,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:37:09,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:37:09,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:37:09,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:37:09,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:37:09,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:37:09,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:37:09,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:37:09,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:37:09,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:37:09,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:37:09,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:37:09,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:37:09,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:37:09,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:37:09,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:37:09,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:37:09,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:37:09,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:37:09,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:37:09,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:37:09,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:37:09,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:37:09,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:37:09,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:37:09,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:37:09,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:37:09,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:37:09,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:37:09,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:37:09,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:37:09,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:37:09,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:37:09,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:37:09,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:37:09,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:37:09,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:37:09,736 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:37:09,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:37:09,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:37:09,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:37:09,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:37:09,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:37:09,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:37:09,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:37:09,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:37:09,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:37:09,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:37:09,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:37:09,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:37:09,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:37:09,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:37:09,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:37:09,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:09,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:37:09,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:37:09,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:37:09,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:37:09,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:37:09,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:37:09,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:37:09,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:37:09,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:37:09,746 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_1804851a-322d-40a6-830c-a88aff95290a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2021-11-13 17:37:10,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:37:10,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:37:10,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:37:10,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:37:10,064 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:37:10,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-11-13 17:37:10,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/data/b90878d5b/9565a60f6b8f4abd8eea3ae0ffccbce7/FLAG3ff82f451 [2021-11-13 17:37:10,740 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:37:10,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-11-13 17:37:10,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/data/b90878d5b/9565a60f6b8f4abd8eea3ae0ffccbce7/FLAG3ff82f451 [2021-11-13 17:37:11,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/data/b90878d5b/9565a60f6b8f4abd8eea3ae0ffccbce7 [2021-11-13 17:37:11,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:37:11,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:37:11,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:11,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:37:11,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:37:11,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db3c754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11, skipping insertion in model container [2021-11-13 17:37:11,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:37:11,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:37:11,434 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_1804851a-322d-40a6-830c-a88aff95290a/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-11-13 17:37:11,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:11,453 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:37:11,581 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_1804851a-322d-40a6-830c-a88aff95290a/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-11-13 17:37:11,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:37:11,597 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:37:11,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11 WrapperNode [2021-11-13 17:37:11,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:37:11,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:11,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:37:11,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:37:11,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:37:11,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:37:11,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:37:11,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:37:11,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:37:11,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:37:11,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:37:11,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:37:11,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (1/1) ... [2021-11-13 17:37:11,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:37:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:11,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:37:11,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:37:11,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:37:11,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:37:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:37:11,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:37:12,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:37:12,899 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:37:12,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:37:12 BoogieIcfgContainer [2021-11-13 17:37:12,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:37:12,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:37:12,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:37:12,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:37:12,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:37:11" (1/3) ... [2021-11-13 17:37:12,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:37:12, skipping insertion in model container [2021-11-13 17:37:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:37:11" (2/3) ... [2021-11-13 17:37:12,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0a66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:37:12, skipping insertion in model container [2021-11-13 17:37:12,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:37:12" (3/3) ... [2021-11-13 17:37:12,918 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-11-13 17:37:12,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:37:12,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:37:12,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:37:12,994 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 17:37:12,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:37:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:37:13,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:13,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:13,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:13,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:13,027 INFO L85 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2021-11-13 17:37:13,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:13,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914236568] [2021-11-13 17:37:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,302 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 17:37:13,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:13,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914236568] [2021-11-13 17:37:13,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914236568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:13,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:13,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:37:13,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830700608] [2021-11-13 17:37:13,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:13,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:37:13,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:37:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:37:13,365 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:13,431 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2021-11-13 17:37:13,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:37:13,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 17:37:13,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:13,444 INFO L225 Difference]: With dead ends: 216 [2021-11-13 17:37:13,445 INFO L226 Difference]: Without dead ends: 100 [2021-11-13 17:37:13,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:37:13,453 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:13,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:37:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-13 17:37:13,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-11-13 17:37:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2021-11-13 17:37:13,507 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2021-11-13 17:37:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:13,508 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2021-11-13 17:37:13,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2021-11-13 17:37:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:37:13,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:13,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:13,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:37:13,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2021-11-13 17:37:13,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:13,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152788404] [2021-11-13 17:37:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,574 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 17:37:13,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:13,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152788404] [2021-11-13 17:37:13,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152788404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:13,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:13,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:13,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345865854] [2021-11-13 17:37:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:13,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:13,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:13,579 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:13,631 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2021-11-13 17:37:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:13,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-13 17:37:13,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:13,634 INFO L225 Difference]: With dead ends: 201 [2021-11-13 17:37:13,634 INFO L226 Difference]: Without dead ends: 103 [2021-11-13 17:37:13,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:13,638 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:13,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 18 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 31.19ms Time] [2021-11-13 17:37:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-13 17:37:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-13 17:37:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2021-11-13 17:37:13,653 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2021-11-13 17:37:13,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:13,654 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2021-11-13 17:37:13,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2021-11-13 17:37:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:37:13,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:13,656 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:13,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:37:13,656 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2021-11-13 17:37:13,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:13,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883544412] [2021-11-13 17:37:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:13,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:13,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:13,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883544412] [2021-11-13 17:37:13,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883544412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:13,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:13,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:37:13,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30244250] [2021-11-13 17:37:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:13,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:37:13,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:37:13,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:13,971 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:14,421 INFO L93 Difference]: Finished difference Result 210 states and 337 transitions. [2021-11-13 17:37:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-13 17:37:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:14,425 INFO L225 Difference]: With dead ends: 210 [2021-11-13 17:37:14,425 INFO L226 Difference]: Without dead ends: 191 [2021-11-13 17:37:14,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:14,427 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 280 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.39ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 394.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:14,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 324 Invalid, 191 Unknown, 0 Unchecked, 14.39ms Time], IncrementalHoareTripleChecker [42 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 394.83ms Time] [2021-11-13 17:37:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-13 17:37:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 172. [2021-11-13 17:37:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2021-11-13 17:37:14,465 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2021-11-13 17:37:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:14,465 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2021-11-13 17:37:14,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2021-11-13 17:37:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 17:37:14,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:14,472 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:14,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:37:14,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:14,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2021-11-13 17:37:14,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:14,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182373401] [2021-11-13 17:37:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:14,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:14,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:14,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182373401] [2021-11-13 17:37:14,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182373401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:14,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:14,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:14,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936384732] [2021-11-13 17:37:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:14,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:14,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:14,596 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:14,640 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2021-11-13 17:37:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:14,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-13 17:37:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:14,645 INFO L225 Difference]: With dead ends: 293 [2021-11-13 17:37:14,645 INFO L226 Difference]: Without dead ends: 124 [2021-11-13 17:37:14,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:14,659 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 30 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:14,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 283 Invalid, 20 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 30.74ms Time] [2021-11-13 17:37:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-13 17:37:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-13 17:37:14,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2021-11-13 17:37:14,671 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2021-11-13 17:37:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:14,676 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2021-11-13 17:37:14,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2021-11-13 17:37:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 17:37:14,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:14,680 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:37:14,681 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2021-11-13 17:37:14,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:14,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232338175] [2021-11-13 17:37:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:14,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:37:14,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:14,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232338175] [2021-11-13 17:37:14,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232338175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:14,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:14,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745107916] [2021-11-13 17:37:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:14,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:14,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:14,822 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:14,860 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2021-11-13 17:37:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-13 17:37:14,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:14,864 INFO L225 Difference]: With dead ends: 226 [2021-11-13 17:37:14,864 INFO L226 Difference]: Without dead ends: 107 [2021-11-13 17:37:14,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:14,872 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 94 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:14,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 24.96ms Time] [2021-11-13 17:37:14,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-13 17:37:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-11-13 17:37:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.5673076923076923) internal successors, (163), 104 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2021-11-13 17:37:14,891 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2021-11-13 17:37:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:14,892 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2021-11-13 17:37:14,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2021-11-13 17:37:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-13 17:37:14,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:14,898 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:14,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:37:14,900 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2021-11-13 17:37:14,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:14,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136400458] [2021-11-13 17:37:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:14,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:15,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:15,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136400458] [2021-11-13 17:37:15,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136400458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:15,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814314875] [2021-11-13 17:37:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:15,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:15,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:15,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:15,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:37:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:37:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:15,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:15,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814314875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:15,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:37:15,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-11-13 17:37:15,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96717769] [2021-11-13 17:37:15,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:15,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:37:15,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:15,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:37:15,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:37:15,552 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:16,274 INFO L93 Difference]: Finished difference Result 359 states and 564 transitions. [2021-11-13 17:37:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:37:16,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-13 17:37:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:16,277 INFO L225 Difference]: With dead ends: 359 [2021-11-13 17:37:16,278 INFO L226 Difference]: Without dead ends: 319 [2021-11-13 17:37:16,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:37:16,279 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 930 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 490.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.69ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 568.67ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:16,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 1086 Invalid, 335 Unknown, 0 Unchecked, 9.69ms Time], IncrementalHoareTripleChecker [105 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 568.67ms Time] [2021-11-13 17:37:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-13 17:37:16,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 275. [2021-11-13 17:37:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.583941605839416) internal successors, (434), 274 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 434 transitions. [2021-11-13 17:37:16,297 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 434 transitions. Word has length 23 [2021-11-13 17:37:16,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:16,301 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 434 transitions. [2021-11-13 17:37:16,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 434 transitions. [2021-11-13 17:37:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:37:16,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:16,304 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:16,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:16,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:37:16,532 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:16,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2021-11-13 17:37:16,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:16,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026976164] [2021-11-13 17:37:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:37:16,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:16,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026976164] [2021-11-13 17:37:16,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026976164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:16,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:16,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:16,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599632296] [2021-11-13 17:37:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:16,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:16,614 INFO L87 Difference]: Start difference. First operand 275 states and 434 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:16,652 INFO L93 Difference]: Finished difference Result 548 states and 861 transitions. [2021-11-13 17:37:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-13 17:37:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:16,656 INFO L225 Difference]: With dead ends: 548 [2021-11-13 17:37:16,656 INFO L226 Difference]: Without dead ends: 297 [2021-11-13 17:37:16,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:16,659 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 30 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:16,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 225 Invalid, 20 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 22.78ms Time] [2021-11-13 17:37:16,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-13 17:37:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2021-11-13 17:37:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.5442176870748299) internal successors, (454), 294 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 454 transitions. [2021-11-13 17:37:16,680 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 454 transitions. Word has length 25 [2021-11-13 17:37:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:16,680 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 454 transitions. [2021-11-13 17:37:16,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 454 transitions. [2021-11-13 17:37:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 17:37:16,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:16,683 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 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 17:37:16,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:37:16,684 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2021-11-13 17:37:16,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:16,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135037565] [2021-11-13 17:37:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:37:16,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:16,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135037565] [2021-11-13 17:37:16,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135037565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:16,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:16,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:16,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351850699] [2021-11-13 17:37:16,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:16,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:16,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:16,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:16,834 INFO L87 Difference]: Start difference. First operand 295 states and 454 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:16,851 INFO L93 Difference]: Finished difference Result 298 states and 456 transitions. [2021-11-13 17:37:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-13 17:37:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:16,858 INFO L225 Difference]: With dead ends: 298 [2021-11-13 17:37:16,859 INFO L226 Difference]: Without dead ends: 292 [2021-11-13 17:37:16,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:16,860 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 119 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:16,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 136 Invalid, 4 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [3 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 6.95ms Time] [2021-11-13 17:37:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-13 17:37:16,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-11-13 17:37:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5241379310344827) internal successors, (442), 290 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 442 transitions. [2021-11-13 17:37:16,886 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 442 transitions. Word has length 27 [2021-11-13 17:37:16,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:16,889 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 442 transitions. [2021-11-13 17:37:16,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:16,890 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 442 transitions. [2021-11-13 17:37:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 17:37:16,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:16,892 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:16,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:37:16,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2021-11-13 17:37:16,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:16,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38252583] [2021-11-13 17:37:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 17:37:16,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:16,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38252583] [2021-11-13 17:37:16,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38252583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:16,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:16,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:16,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44508546] [2021-11-13 17:37:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:16,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:16,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:16,969 INFO L87 Difference]: Start difference. First operand 291 states and 442 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:17,002 INFO L93 Difference]: Finished difference Result 510 states and 775 transitions. [2021-11-13 17:37:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:17,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-13 17:37:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:17,006 INFO L225 Difference]: With dead ends: 510 [2021-11-13 17:37:17,006 INFO L226 Difference]: Without dead ends: 243 [2021-11-13 17:37:17,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:17,009 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 59 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:17,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 184 Invalid, 19 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 20.06ms Time] [2021-11-13 17:37:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-13 17:37:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-11-13 17:37:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5041666666666667) internal successors, (361), 240 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 361 transitions. [2021-11-13 17:37:17,022 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 361 transitions. Word has length 33 [2021-11-13 17:37:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:17,023 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 361 transitions. [2021-11-13 17:37:17,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 361 transitions. [2021-11-13 17:37:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 17:37:17,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:17,028 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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] [2021-11-13 17:37:17,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:37:17,029 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:17,030 INFO L85 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2021-11-13 17:37:17,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:17,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339884292] [2021-11-13 17:37:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:17,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-13 17:37:17,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:17,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339884292] [2021-11-13 17:37:17,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339884292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:17,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:17,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:17,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469508733] [2021-11-13 17:37:17,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:17,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:17,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:17,089 INFO L87 Difference]: Start difference. First operand 241 states and 361 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:17,134 INFO L93 Difference]: Finished difference Result 424 states and 632 transitions. [2021-11-13 17:37:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:17,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-13 17:37:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:17,137 INFO L225 Difference]: With dead ends: 424 [2021-11-13 17:37:17,137 INFO L226 Difference]: Without dead ends: 225 [2021-11-13 17:37:17,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:17,139 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:17,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 212 Invalid, 21 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 22.77ms Time] [2021-11-13 17:37:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-13 17:37:17,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-11-13 17:37:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4594594594594594) internal successors, (324), 222 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2021-11-13 17:37:17,154 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2021-11-13 17:37:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:17,154 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2021-11-13 17:37:17,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2021-11-13 17:37:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 17:37:17,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:17,157 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2021-11-13 17:37:17,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:37:17,158 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2021-11-13 17:37:17,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:17,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078272824] [2021-11-13 17:37:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:17,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 17:37:17,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:17,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078272824] [2021-11-13 17:37:17,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078272824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:17,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:17,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:37:17,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741075941] [2021-11-13 17:37:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:17,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:37:17,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:37:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:17,252 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:17,282 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2021-11-13 17:37:17,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:37:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-13 17:37:17,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:17,287 INFO L225 Difference]: With dead ends: 305 [2021-11-13 17:37:17,287 INFO L226 Difference]: Without dead ends: 143 [2021-11-13 17:37:17,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:37:17,290 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.83ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:17,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 184 Invalid, 20 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 20.83ms Time] [2021-11-13 17:37:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-13 17:37:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-11-13 17:37:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 140 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-11-13 17:37:17,299 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2021-11-13 17:37:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:17,300 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-11-13 17:37:17,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-11-13 17:37:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 17:37:17,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:17,301 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2021-11-13 17:37:17,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:37:17,302 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:17,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:17,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2021-11-13 17:37:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:17,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575555884] [2021-11-13 17:37:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:17,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 17:37:17,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:17,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575555884] [2021-11-13 17:37:17,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575555884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:17,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186758094] [2021-11-13 17:37:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:17,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:17,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:17,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:37:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-13 17:37:17,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:17,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:37:18,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186758094] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:18,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:37:18,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2021-11-13 17:37:18,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407422036] [2021-11-13 17:37:18,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:18,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:37:18,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:37:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:37:18,471 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:18,845 INFO L93 Difference]: Finished difference Result 189 states and 262 transitions. [2021-11-13 17:37:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:37:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-13 17:37:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:18,848 INFO L225 Difference]: With dead ends: 189 [2021-11-13 17:37:18,848 INFO L226 Difference]: Without dead ends: 181 [2021-11-13 17:37:18,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:37:18,849 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 478 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:18,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 777 Invalid, 131 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [35 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 192.47ms Time] [2021-11-13 17:37:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-13 17:37:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2021-11-13 17:37:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.4046242774566473) internal successors, (243), 173 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 243 transitions. [2021-11-13 17:37:18,863 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 243 transitions. Word has length 47 [2021-11-13 17:37:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:18,865 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 243 transitions. [2021-11-13 17:37:18,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 243 transitions. [2021-11-13 17:37:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:37:18,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:18,867 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:18,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:19,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 17:37:19,088 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 384172331, now seen corresponding path program 1 times [2021-11-13 17:37:19,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:19,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212850986] [2021-11-13 17:37:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:19,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:37:19,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212850986] [2021-11-13 17:37:19,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212850986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:19,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729228384] [2021-11-13 17:37:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:19,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:19,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:19,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:37:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-13 17:37:19,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:20,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 17:37:20,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729228384] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:20,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:37:20,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 9] total 16 [2021-11-13 17:37:20,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381242295] [2021-11-13 17:37:20,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:20,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:20,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:37:20,424 INFO L87 Difference]: Start difference. First operand 174 states and 243 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:20,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:20,564 INFO L93 Difference]: Finished difference Result 181 states and 248 transitions. [2021-11-13 17:37:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-13 17:37:20,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:20,567 INFO L225 Difference]: With dead ends: 181 [2021-11-13 17:37:20,567 INFO L226 Difference]: Without dead ends: 179 [2021-11-13 17:37:20,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:37:20,568 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 18 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.84ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:20,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 246 Invalid, 49 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 88.84ms Time] [2021-11-13 17:37:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-13 17:37:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2021-11-13 17:37:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.3988439306358382) internal successors, (242), 173 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2021-11-13 17:37:20,582 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 66 [2021-11-13 17:37:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:20,582 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2021-11-13 17:37:20,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2021-11-13 17:37:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 17:37:20,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:20,584 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:20,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:37:20,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 17:37:20,812 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2057891779, now seen corresponding path program 1 times [2021-11-13 17:37:20,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:20,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111506466] [2021-11-13 17:37:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:20,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-13 17:37:21,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:21,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111506466] [2021-11-13 17:37:21,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111506466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:37:21,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104952534] [2021-11-13 17:37:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:21,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:21,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:37:21,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:37:21,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:37:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:21,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 17:37:21,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:37:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:37:22,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:37:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 58 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 17:37:23,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104952534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:37:23,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:37:23,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2021-11-13 17:37:23,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571054687] [2021-11-13 17:37:23,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:37:23,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 17:37:23,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:23,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 17:37:23,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:37:23,351 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand has 23 states, 23 states have (on average 8.695652173913043) internal successors, (200), 23 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:23,707 INFO L93 Difference]: Finished difference Result 212 states and 295 transitions. [2021-11-13 17:37:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:37:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.695652173913043) internal successors, (200), 23 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 17:37:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:23,709 INFO L225 Difference]: With dead ends: 212 [2021-11-13 17:37:23,709 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 17:37:23,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-11-13 17:37:23,710 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 538 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.52ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.55ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:23,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 1366 Invalid, 165 Unknown, 0 Unchecked, 6.52ms Time], IncrementalHoareTripleChecker [31 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 216.55ms Time] [2021-11-13 17:37:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 17:37:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 17:37:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 17:37:23,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-11-13 17:37:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:23,712 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:37:23,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.695652173913043) internal successors, (200), 23 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:37:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 17:37:23,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 17:37:23,715 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:37:23,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-13 17:37:23,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:37:23,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 17:37:24,459 INFO L858 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2021-11-13 17:37:24,459 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-11-13 17:37:24,460 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2021-11-13 17:37:24,461 INFO L858 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2021-11-13 17:37:24,462 INFO L858 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2021-11-13 17:37:24,463 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2021-11-13 17:37:24,464 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2021-11-13 17:37:24,465 INFO L861 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2021-11-13 17:37:24,465 INFO L858 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2021-11-13 17:37:24,465 INFO L858 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2021-11-13 17:37:24,465 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2021-11-13 17:37:24,465 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2021-11-13 17:37:24,467 INFO L858 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2021-11-13 17:37:24,467 INFO L858 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-11-13 17:37:24,468 INFO L858 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2021-11-13 17:37:24,468 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2021-11-13 17:37:24,468 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-11-13 17:37:24,468 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-11-13 17:37:24,468 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-11-13 17:37:24,469 INFO L858 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2021-11-13 17:37:24,469 INFO L858 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2021-11-13 17:37:24,469 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 17:37:24,469 INFO L858 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-11-13 17:37:24,470 INFO L854 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2021-11-13 17:37:24,470 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2021-11-13 17:37:24,470 INFO L858 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2021-11-13 17:37:24,470 INFO L858 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2021-11-13 17:37:24,470 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 17:37:24,471 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0))) (or (and .cse0 (<= (div |ULTIMATE.start_main_~P8~0#1| 4294967296) 0) (<= 5 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 2) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 2)) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))) (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0)))) [2021-11-13 17:37:24,471 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2021-11-13 17:37:24,471 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2021-11-13 17:37:24,471 INFO L858 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2021-11-13 17:37:24,471 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2021-11-13 17:37:24,472 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2021-11-13 17:37:24,472 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-13 17:37:24,472 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2021-11-13 17:37:24,472 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2021-11-13 17:37:24,472 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2021-11-13 17:37:24,473 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2021-11-13 17:37:24,474 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2021-11-13 17:37:24,474 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2021-11-13 17:37:24,474 INFO L854 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1)) (.cse4 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 2) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 2))) (.cse5 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0)) (.cse0 (<= (div |ULTIMATE.start_main_~P8~0#1| 4294967296) 0)) (.cse6 (<= 3 |ULTIMATE.start_main_~q~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 1))) (.cse2 (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648)))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 4) .cse1 .cse2 .cse3) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 1) .cse4 .cse2 .cse3) (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) (<= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 |ULTIMATE.start_main_~this_buffer_empty~0#1|)) (and .cse5 .cse0 .cse6 (<= 5 |ULTIMATE.start_main_~q~0#1|) .cse4 .cse2) (and .cse5 .cse0 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse6 .cse1 .cse2))) [2021-11-13 17:37:24,474 INFO L858 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2021-11-13 17:37:24,475 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2021-11-13 17:37:24,475 INFO L858 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2021-11-13 17:37:24,475 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2021-11-13 17:37:24,475 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2021-11-13 17:37:24,475 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2021-11-13 17:37:24,476 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2021-11-13 17:37:24,476 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2021-11-13 17:37:24,476 INFO L858 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2021-11-13 17:37:24,476 INFO L858 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2021-11-13 17:37:24,476 INFO L858 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2021-11-13 17:37:24,477 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2021-11-13 17:37:24,477 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2021-11-13 17:37:24,477 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-13 17:37:24,477 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-11-13 17:37:24,477 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2021-11-13 17:37:24,478 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-11-13 17:37:24,479 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-11-13 17:37:24,479 INFO L858 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2021-11-13 17:37:24,479 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-11-13 17:37:24,479 INFO L858 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2021-11-13 17:37:24,479 INFO L858 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2021-11-13 17:37:24,480 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2021-11-13 17:37:24,483 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:24,485 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:37:24,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:37:24 BoogieIcfgContainer [2021-11-13 17:37:24,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 17:37:24,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:37:24,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:37:24,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:37:24,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:37:12" (3/4) ... [2021-11-13 17:37:24,510 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 17:37:24,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-13 17:37:24,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 17:37:24,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 17:37:24,528 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 17:37:24,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 17:37:24,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:37:24,557 INFO L158 Benchmark]: Toolchain (without parser) took 13507.72ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 82.4MB in the beginning and 111.3MB in the end (delta: -28.9MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,558 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:37:24,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.77ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 82.2MB in the beginning and 105.5MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.40ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 100.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,559 INFO L158 Benchmark]: Boogie Preprocessor took 114.44ms. Allocated memory is still 140.5MB. Free memory was 100.8MB in the beginning and 97.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,560 INFO L158 Benchmark]: RCFGBuilder took 1097.36ms. Allocated memory is still 140.5MB. Free memory was 97.1MB in the beginning and 65.1MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,560 INFO L158 Benchmark]: TraceAbstraction took 11599.53ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 64.5MB in the beginning and 114.4MB in the end (delta: -49.9MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,561 INFO L158 Benchmark]: Witness Printer took 50.32ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:37:24,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.77ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 82.2MB in the beginning and 105.5MB in the end (delta: -23.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.40ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 100.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 114.44ms. Allocated memory is still 140.5MB. Free memory was 100.8MB in the beginning and 97.1MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1097.36ms. Allocated memory is still 140.5MB. Free memory was 97.1MB in the beginning and 65.1MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11599.53ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 64.5MB in the beginning and 114.4MB in the end (delta: -49.9MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. * Witness Printer took 50.32ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 14, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2635 SdHoareTripleChecker+Valid, 1641.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2635 mSDsluCounter, 5695 SdHoareTripleChecker+Invalid, 1372.11ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3615 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 782 IncrementalHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 2080 mSDtfsCounter, 782 mSolverCounterSat, 58.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=7, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 88 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 21 NumberOfFragments, 173 HoareAnnotationTreeSize, 4 FomulaSimplifications, 79 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 1489 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 667 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 859 ConstructedInterpolants, 0 QuantifiedInterpolants, 7241 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1563 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 353/791 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((P8 / 4294967296 <= 0 && q == 4) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) || ((((P8 / 4294967296 <= 0 && q == 1) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648) && this_buffer_empty == 1)) || (((this_expect == 0 && this_buffer_empty <= 0) && q == 0) && 0 <= this_buffer_empty)) || (((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 3 <= q) && 5 <= q) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648)) || (((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 3 == q) && 3 <= q) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((this_buffer_empty == 0 && P8 / 4294967296 <= 0) && 5 <= q) && this_expect <= 2 * ((-2 + this_expect) / 2) + 2) && 0 <= P8 + 2147483648) || ((this_expect == 0 && this_buffer_empty == 0) && q == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-13 17:37:24,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1804851a-322d-40a6-830c-a88aff95290a/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE