./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:44:32,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:44:32,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:44:32,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:44:32,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:44:32,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:44:32,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:44:32,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:44:32,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:44:32,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:44:32,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:44:32,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:44:32,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:44:32,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:44:32,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:44:32,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:44:32,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:44:32,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:44:32,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:44:32,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:44:32,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:44:32,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:44:32,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:44:32,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:44:32,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:44:32,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:44:32,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:44:32,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:44:32,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:44:32,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:44:32,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:44:32,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:44:32,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:44:32,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:44:32,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:44:32,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:44:32,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:44:32,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:44:32,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:44:32,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:44:32,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:44:32,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:44:32,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:44:32,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:44:32,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:44:32,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:44:32,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:44:32,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:44:32,817 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:44:32,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:44:32,818 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:44:32,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:44:32,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:44:32,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:44:32,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:44:32,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:44:32,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:44:32,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:44:32,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:44:32,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:44:32,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:44:32,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:44:32,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:44:32,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:44:32,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:44:32,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:44:32,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:44:32,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:44:32,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:44:32,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:44:32,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:44:32,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:44:32,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:44:32,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:44:32,823 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_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 383c6933c6ab916f651364224af1d774f30e162ad506fd2f28fe7f76c4487ba3 [2021-11-23 13:44:33,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:44:33,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:44:33,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:44:33,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:44:33,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:44:33,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2021-11-23 13:44:33,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/data/d87c98104/bfdbc678d51b4fd29b15059e930ad9ac/FLAG9cafaa001 [2021-11-23 13:44:33,841 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:44:33,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i [2021-11-23 13:44:33,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/data/d87c98104/bfdbc678d51b4fd29b15059e930ad9ac/FLAG9cafaa001 [2021-11-23 13:44:34,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/data/d87c98104/bfdbc678d51b4fd29b15059e930ad9ac [2021-11-23 13:44:34,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:44:34,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:44:34,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:44:34,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:44:34,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:44:34,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2810f7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34, skipping insertion in model container [2021-11-23 13:44:34,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:44:34,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:44:34,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2021-11-23 13:44:34,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:44:34,536 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:44:34,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/sv-benchmarks/c/list-simple/sll2n_insert_unequal.i[24620,24633] [2021-11-23 13:44:34,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:44:34,614 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:44:34,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34 WrapperNode [2021-11-23 13:44:34,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:44:34,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:44:34,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:44:34,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:44:34,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,669 INFO L137 Inliner]: procedures = 128, calls = 36, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 161 [2021-11-23 13:44:34,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:44:34,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:44:34,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:44:34,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:44:34,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:44:34,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:44:34,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:44:34,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:44:34,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2021-11-23 13:44:34,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:44:34,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:44:34,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:44:34,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:44:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:44:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:44:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:44:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:44:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:44:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:44:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:44:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:44:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:44:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:44:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:44:34,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:44:35,006 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:44:35,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:44:35,379 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:44:35,386 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:44:35,387 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:44:35,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:35 BoogieIcfgContainer [2021-11-23 13:44:35,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:44:35,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:44:35,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:44:35,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:44:35,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:44:34" (1/3) ... [2021-11-23 13:44:35,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4480eb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:35, skipping insertion in model container [2021-11-23 13:44:35,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (2/3) ... [2021-11-23 13:44:35,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4480eb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:35, skipping insertion in model container [2021-11-23 13:44:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:35" (3/3) ... [2021-11-23 13:44:35,398 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2021-11-23 13:44:35,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:44:35,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:44:35,458 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:44:35,465 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:44:35,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:44:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:44:35,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:35,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:35,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:35,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1194522529, now seen corresponding path program 1 times [2021-11-23 13:44:35,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:35,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238546962] [2021-11-23 13:44:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:35,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:35,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:35,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238546962] [2021-11-23 13:44:35,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238546962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:35,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:35,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:44:35,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323079253] [2021-11-23 13:44:35,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:35,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:44:35,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:44:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:44:35,724 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 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 7.5) internal successors, (15), 2 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) [2021-11-23 13:44:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:35,742 INFO L93 Difference]: Finished difference Result 56 states and 85 transitions. [2021-11-23 13:44:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:44:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 [2021-11-23 13:44:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:35,753 INFO L225 Difference]: With dead ends: 56 [2021-11-23 13:44:35,754 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 13:44:35,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:44:35,761 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:35,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 13:44:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 13:44:35,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-11-23 13:44:35,797 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 15 [2021-11-23 13:44:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:35,798 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-11-23 13:44:35,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) [2021-11-23 13:44:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-11-23 13:44:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:44:35,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:35,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:35,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:44:35,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1956011379, now seen corresponding path program 1 times [2021-11-23 13:44:35,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352120094] [2021-11-23 13:44:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:35,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:35,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352120094] [2021-11-23 13:44:35,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352120094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:35,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:35,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:35,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021985285] [2021-11-23 13:44:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:35,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:35,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:35,874 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-23 13:44:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:35,891 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2021-11-23 13:44:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2021-11-23 13:44:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:35,893 INFO L225 Difference]: With dead ends: 48 [2021-11-23 13:44:35,893 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 13:44:35,894 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 [2021-11-23 13:44:35,895 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:35,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 13:44:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-23 13:44:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-23 13:44:35,903 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 15 [2021-11-23 13:44:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:35,903 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-23 13:44:35,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-23 13:44:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-23 13:44:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:44:35,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:35,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:35,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:44:35,906 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1865426395, now seen corresponding path program 1 times [2021-11-23 13:44:35,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:35,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902501504] [2021-11-23 13:44:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:35,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:36,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:36,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902501504] [2021-11-23 13:44:36,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902501504] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:44:36,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442063972] [2021-11-23 13:44:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:36,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:44:36,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:44:36,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:44:36,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:44:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:36,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:44:36,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:44:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:36,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:44:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:44:36,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442063972] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:44:36,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:44:36,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-23 13:44:36,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227497916] [2021-11-23 13:44:36,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:44:36,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:44:36,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:44:36,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:36,453 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:36,491 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-11-23 13:44:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 20 [2021-11-23 13:44:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:36,495 INFO L225 Difference]: With dead ends: 49 [2021-11-23 13:44:36,496 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 13:44:36,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:36,501 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:36,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 111 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 13:44:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-23 13:44:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-23 13:44:36,514 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2021-11-23 13:44:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:36,515 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-23 13:44:36,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-23 13:44:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:44:36,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:36,517 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:36,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:44:36,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:44:36,732 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -652959347, now seen corresponding path program 2 times [2021-11-23 13:44:36,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:36,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564224556] [2021-11-23 13:44:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:36,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:44:36,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:36,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564224556] [2021-11-23 13:44:36,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564224556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:36,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:36,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:44:36,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503975766] [2021-11-23 13:44:36,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:44:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:44:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:44:36,842 INFO L87 Difference]: Start difference. First operand 31 states and 38 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) [2021-11-23 13:44:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:36,865 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2021-11-23 13:44:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:44:36,867 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 25 [2021-11-23 13:44:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:36,869 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:44:36,869 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 13:44:36,869 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 [2021-11-23 13:44:36,872 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:36,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 13:44:36,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2021-11-23 13:44:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:44:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-11-23 13:44:36,911 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 25 [2021-11-23 13:44:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:36,911 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-11-23 13:44:36,912 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) [2021-11-23 13:44:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-11-23 13:44:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 13:44:36,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:36,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:36,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:44:36,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash -595701045, now seen corresponding path program 1 times [2021-11-23 13:44:36,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873566841] [2021-11-23 13:44:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:36,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:44:37,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:37,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873566841] [2021-11-23 13:44:37,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873566841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:44:37,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:44:37,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:44:37,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647101878] [2021-11-23 13:44:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:44:37,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:44:37,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:44:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:44:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:44:37,070 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-11-23 13:44:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:44:37,107 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2021-11-23 13:44:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:44:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 25 [2021-11-23 13:44:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:44:37,110 INFO L225 Difference]: With dead ends: 44 [2021-11-23 13:44:37,110 INFO L226 Difference]: Without dead ends: 32 [2021-11-23 13:44:37,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:44:37,112 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:44:37,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 55 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:44:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-23 13:44:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-23 13:44:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2021-11-23 13:44:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-11-23 13:44:37,118 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 25 [2021-11-23 13:44:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:44:37,119 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-11-23 13:44:37,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-11-23 13:44:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-11-23 13:44:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:44:37,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:44:37,122 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:44:37,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:44:37,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:44:37,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:44:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1797019224, now seen corresponding path program 1 times [2021-11-23 13:44:37,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:44:37,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776325562] [2021-11-23 13:44:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:37,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:44:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:44:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:44:37,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776325562] [2021-11-23 13:44:37,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776325562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:44:37,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938969431] [2021-11-23 13:44:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:44:37,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:44:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:44:37,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:44:37,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:44:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:37,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-23 13:44:37,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:44:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:44:38,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:44:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:38,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 13:44:38,588 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-23 13:44:38,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 13:44:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:38,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2021-11-23 13:44:38,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2021-11-23 13:44:38,804 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-23 13:44:38,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 46 [2021-11-23 13:44:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:38,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-11-23 13:44:39,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:39,307 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 13:44:39,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 99 [2021-11-23 13:44:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:39,341 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-23 13:44:39,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 116 [2021-11-23 13:44:39,360 INFO L354 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2021-11-23 13:44:39,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 86 [2021-11-23 13:44:39,563 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-23 13:44:39,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 222 treesize of output 110 [2021-11-23 13:44:39,586 INFO L354 Elim1Store]: treesize reduction 109, result has 10.7 percent of original size [2021-11-23 13:44:39,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 174 treesize of output 148 [2021-11-23 13:44:39,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 80 [2021-11-23 13:44:39,731 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 13:44:39,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 54 [2021-11-23 13:44:39,747 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 13:44:39,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2021-11-23 13:44:39,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:44:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:44:39,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:45:23,565 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_insert_~last~0#1.base_10| Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_10| Int) (v_DerPreprocessor_2 Int) (|v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| Int) (v_DerPreprocessor_1 Int)) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse1 (+ 4 |c_ULTIMATE.start_node_create_#res#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| 4))) (select (select (let ((.cse0 (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) .cse3 v_DerPreprocessor_2)))) (store .cse0 |c_ULTIMATE.start_node_create_#res#1.base| (store (select .cse0 |c_ULTIMATE.start_node_create_#res#1.base|) .cse1 v_DerPreprocessor_1))) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_node_create_#res#1.base|)))) (store .cse4 |c_ULTIMATE.start_node_create_#res#1.base| (store (select .cse4 |c_ULTIMATE.start_node_create_#res#1.base|) .cse1 |v_ULTIMATE.start_sll_insert_~last~0#1.base_10|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 |c_ULTIMATE.start_node_create_#res#1.offset|)))) (store .cse5 |c_ULTIMATE.start_node_create_#res#1.base| (store (select .cse5 |c_ULTIMATE.start_node_create_#res#1.base|) .cse1 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_10|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (< |v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)))) is different from false [2021-11-23 13:45:25,649 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_node_create_~data#1| Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_10| Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_10| Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int) (|v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| Int) (v_DerPreprocessor_1 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_5)))) (or (< |v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| (select (select .cse0 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (= (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_4)))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse5 (+ |v_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset_8| 4))) (select (select (let ((.cse1 (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 v_DerPreprocessor_3) |c_ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|)))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_DerPreprocessor_2))))) (store .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 v_DerPreprocessor_1))) (select (select (let ((.cse6 (store .cse7 .cse4 (store (select .cse7 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse6 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse6 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 |v_ULTIMATE.start_sll_insert_~last~0#1.base_10|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse8 (store .cse0 .cse4 (store (select .cse0 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse8 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_10|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) |c_ULTIMATE.start_main_~data~0#1|))))) is different from false [2021-11-23 13:45:25,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88913 treesize of output 84429 [2021-11-23 13:45:26,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11513556 treesize of output 11481800 [2021-11-23 13:45:40,431 WARN L227 SmtUtils]: Spent 14.06s on a formula simplification that was a NOOP. DAG size: 2122 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 13:45:54,042 WARN L227 SmtUtils]: Spent 13.59s on a formula simplification that was a NOOP. DAG size: 2119 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 13:45:54,169 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 13:45:54,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:45:54,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-23 13:45:54,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552244608] [2021-11-23 13:45:54,170 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 13:45:54,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:45:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:45:54,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=819, Unknown=21, NotChecked=118, Total=1056 [2021-11-23 13:45:54,172 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:55,512 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2021-11-23 13:45:55,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:45:55,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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 26 [2021-11-23 13:45:55,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:55,516 INFO L225 Difference]: With dead ends: 55 [2021-11-23 13:45:55,516 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 13:45:55,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=209, Invalid=1584, Unknown=21, NotChecked=166, Total=1980 [2021-11-23 13:45:55,518 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:55,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 84 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:45:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 13:45:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2021-11-23 13:45:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-11-23 13:45:55,527 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 26 [2021-11-23 13:45:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:55,527 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-23 13:45:55,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2021-11-23 13:45:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:45:55,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:55,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:45:55,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:55,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:45:55,752 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1854277526, now seen corresponding path program 1 times [2021-11-23 13:45:55,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120176203] [2021-11-23 13:45:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:55,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:55,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:45:55,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120176203] [2021-11-23 13:45:55,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120176203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:45:55,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559919695] [2021-11-23 13:45:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:55,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:55,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:55,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:45:55,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:45:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:56,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:45:56,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:45:56,303 INFO L354 Elim1Store]: treesize reduction 88, result has 16.2 percent of original size [2021-11-23 13:45:56,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 26 [2021-11-23 13:45:56,360 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 13:45:56,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-11-23 13:45:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:45:56,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:00,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 174 [2021-11-23 13:46:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:00,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559919695] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:46:00,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:46:00,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2021-11-23 13:46:00,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265680213] [2021-11-23 13:46:00,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:46:00,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 13:46:00,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:00,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 13:46:00,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=599, Unknown=3, NotChecked=0, Total=702 [2021-11-23 13:46:00,441 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:00,788 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2021-11-23 13:46:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:46:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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 26 [2021-11-23 13:46:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:00,790 INFO L225 Difference]: With dead ends: 58 [2021-11-23 13:46:00,790 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 13:46:00,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=206, Invalid=847, Unknown=3, NotChecked=0, Total=1056 [2021-11-23 13:46:00,792 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:00,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 246 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 172 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2021-11-23 13:46:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 13:46:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2021-11-23 13:46:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-23 13:46:00,803 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 26 [2021-11-23 13:46:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:00,804 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-23 13:46:00,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-23 13:46:00,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:46:00,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:00,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:00,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:01,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 13:46:01,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash -127033810, now seen corresponding path program 1 times [2021-11-23 13:46:01,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131219099] [2021-11-23 13:46:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:01,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:01,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:01,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131219099] [2021-11-23 13:46:01,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131219099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:01,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257567484] [2021-11-23 13:46:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:01,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:01,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:01,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:01,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:46:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:01,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:46:01,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:01,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:01,765 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 13:46:01,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2021-11-23 13:46:01,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:02,012 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-23 13:46:02,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 51 [2021-11-23 13:46:02,326 INFO L354 Elim1Store]: treesize reduction 108, result has 31.6 percent of original size [2021-11-23 13:46:02,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 82 [2021-11-23 13:46:02,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-23 13:46:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:02,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:28,490 WARN L227 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:46:38,017 WARN L227 SmtUtils]: Spent 7.42s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:46:52,433 WARN L227 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:46:52,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102265 treesize of output 101237 [2021-11-23 13:46:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:56,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257567484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:46:56,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:46:56,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2021-11-23 13:46:56,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443631678] [2021-11-23 13:46:56,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:46:56,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-23 13:46:56,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-23 13:46:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1054, Unknown=12, NotChecked=0, Total=1190 [2021-11-23 13:46:56,624 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:57,136 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-11-23 13:46:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:46:57,137 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:46:57,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:57,138 INFO L225 Difference]: With dead ends: 53 [2021-11-23 13:46:57,138 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 13:46:57,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=225, Invalid=1485, Unknown=12, NotChecked=0, Total=1722 [2021-11-23 13:46:57,140 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:57,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 203 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2021-11-23 13:46:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 13:46:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-11-23 13:46:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 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) [2021-11-23 13:46:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-11-23 13:46:57,148 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-11-23 13:46:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:57,149 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-11-23 13:46:57,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-11-23 13:46:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:46:57,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:57,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:57,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:57,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:57,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 436943597, now seen corresponding path program 2 times [2021-11-23 13:46:57,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142780665] [2021-11-23 13:46:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:57,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:46:57,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:57,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142780665] [2021-11-23 13:46:57,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142780665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:57,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:57,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:46:57,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010906094] [2021-11-23 13:46:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:57,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:46:57,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:46:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:46:57,460 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:57,486 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2021-11-23 13:46:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:46:57,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:46:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:57,487 INFO L225 Difference]: With dead ends: 52 [2021-11-23 13:46:57,487 INFO L226 Difference]: Without dead ends: 34 [2021-11-23 13:46:57,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:57,488 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:57,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 40 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-23 13:46:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-23 13:46:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 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) [2021-11-23 13:46:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-11-23 13:46:57,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 27 [2021-11-23 13:46:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:57,495 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-11-23 13:46:57,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-11-23 13:46:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:46:57,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:57,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:57,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:46:57,497 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 358634163, now seen corresponding path program 1 times [2021-11-23 13:46:57,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:57,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145566285] [2021-11-23 13:46:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:57,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:46:57,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:57,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145566285] [2021-11-23 13:46:57,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145566285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:57,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375737691] [2021-11-23 13:46:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:57,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:57,636 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:57,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:46:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:46:57,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:46:57,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:57,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-23 13:46:57,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375737691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:46:57,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:46:57,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-23 13:46:57,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120191969] [2021-11-23 13:46:57,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:46:57,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 13:46:57,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 13:46:57,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:46:57,966 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:58,115 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2021-11-23 13:46:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:46:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:46:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:58,116 INFO L225 Difference]: With dead ends: 44 [2021-11-23 13:46:58,116 INFO L226 Difference]: Without dead ends: 35 [2021-11-23 13:46:58,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:46:58,117 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:58,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 128 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-23 13:46:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-23 13:46:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-23 13:46:58,124 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2021-11-23 13:46:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:58,124 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-23 13:46:58,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-23 13:46:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 13:46:58,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:58,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:58,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:58,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:58,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:58,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1767297741, now seen corresponding path program 1 times [2021-11-23 13:46:58,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:58,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943530131] [2021-11-23 13:46:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:58,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:58,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:58,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943530131] [2021-11-23 13:46:58,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943530131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:58,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127726063] [2021-11-23 13:46:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:58,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:58,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:58,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15fc0feb-40a5-4e7e-a36b-1798dc87288c/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:46:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:59,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-23 13:46:59,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:59,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:46:59,348 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-23 13:46:59,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 13:46:59,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:46:59,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:59,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-11-23 13:46:59,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:59,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 13:46:59,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:59,876 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-11-23 13:46:59,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 108 [2021-11-23 13:46:59,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:46:59,902 INFO L354 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2021-11-23 13:46:59,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 112 [2021-11-23 13:46:59,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 71 [2021-11-23 13:47:00,056 INFO L354 Elim1Store]: treesize reduction 79, result has 16.0 percent of original size [2021-11-23 13:47:00,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 235 treesize of output 126 [2021-11-23 13:47:00,093 INFO L354 Elim1Store]: treesize reduction 151, result has 11.2 percent of original size [2021-11-23 13:47:00,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 144 [2021-11-23 13:47:00,113 INFO L354 Elim1Store]: treesize reduction 67, result has 18.3 percent of original size [2021-11-23 13:47:00,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 75 [2021-11-23 13:47:00,324 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-23 13:47:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 58 [2021-11-23 13:47:00,335 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-23 13:47:00,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2021-11-23 13:47:00,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:47:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:47:00,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:47:02,516 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_8 Int) (|ULTIMATE.start_sll_insert_~last~0#1.base| Int) (|ULTIMATE.start_sll_insert_~last~0#1.offset| Int)) (= |c_ULTIMATE.start_main_~uneq~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse0 |ULTIMATE.start_sll_insert_~last~0#1.offset|))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse0 |ULTIMATE.start_sll_insert_~last~0#1.base|)))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ 4 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse0 v_DerPreprocessor_8)) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))))) is different from false [2021-11-23 13:47:04,537 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (v_DerPreprocessor_8 Int) (|ULTIMATE.start_sll_insert_~last~0#1.base| Int) (|ULTIMATE.start_sll_insert_~last~0#1.offset| Int)) (= |c_ULTIMATE.start_main_~uneq~0#1| (let ((.cse1 (+ |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset| 4)) (.cse2 (+ |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.offset| 4))) (let ((.cse6 (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base|) .cse2 |c_ULTIMATE.start_sll_insert_~new_node~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select .cse8 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse1 |ULTIMATE.start_sll_insert_~last~0#1.offset|)))) (.cse3 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base|) .cse2 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|)))) (store .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select .cse7 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse1 |ULTIMATE.start_sll_insert_~last~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_insert_~snd_to_last~0#1.base|) .cse2 v_DerPreprocessor_9)))) (store .cse0 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_insert_~new_node~0#1.base|) .cse1 v_DerPreprocessor_8))) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))))) is different from false [2021-11-23 13:47:19,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48884 treesize of output 46036 [2021-11-23 13:47:49,031 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (= |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse2 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse5 (+ (select (select .cse7 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (select (let ((.cse0 (let ((.cse1 (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse1 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (let ((.cse6 (store .cse7 .cse4 (store (select .cse7 .cse4) .cse5 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse6 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse6 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse2 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))))))) (= |c_ULTIMATE.start_main_~uneq~0#1| |c_ULTIMATE.start_node_create_~data#1|) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (let ((.cse8 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse20 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse8 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse18 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse8 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse10 (select (select .cse18 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse12 (+ (select (select .cse20 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse16 (let ((.cse19 (store .cse20 .cse10 (store (select .cse20 .cse10) .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse19 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse19 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse8 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|)))) (.cse13 (let ((.cse17 (store .cse18 .cse10 (store (select .cse18 .cse10) .cse12 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse17 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse17 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse8 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (let ((.cse14 (select (select .cse13 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse15 (+ (select (select .cse16 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse9 (select (select .cse16 .cse14) .cse15))) (or (= .cse8 .cse9) (let ((.cse11 (select (select .cse13 .cse14) .cse15))) (and (= |c_ULTIMATE.start_node_create_~temp~0#1.offset| .cse9) (or (not (= .cse10 .cse11)) (not (= .cse12 .cse9))) (= |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse11))))))))))) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (= |c_ULTIMATE.start_node_create_~temp~0#1.offset| (let ((.cse23 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse28 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse23 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse24 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse23 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse25 (select (select .cse24 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse26 (+ (select (select .cse28 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse21 (let ((.cse27 (store .cse28 .cse25 (store (select .cse28 .cse25) .cse26 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse27 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse27 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse23 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|))))) (select (select .cse21 (select (select (let ((.cse22 (store .cse24 .cse25 (store (select .cse24 .cse25) .cse26 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse22 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse22 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse23 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select .cse21 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))))))) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (let ((.cse36 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse40 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse36 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse37 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse36 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse38 (select (select .cse37 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse29 (+ (select (select .cse40 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse34 (let ((.cse39 (store .cse40 .cse38 (store (select .cse40 .cse38) .cse29 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse39 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse39 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse36 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|)))) (.cse31 (let ((.cse35 (store .cse37 .cse38 (store (select .cse37 .cse38) .cse29 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse35 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse35 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse36 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (let ((.cse32 (select (select .cse31 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse33 (+ (select (select .cse34 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse30 (select (select .cse34 .cse32) .cse33))) (or (= .cse29 .cse30) (and (= |c_ULTIMATE.start_node_create_~temp~0#1.offset| .cse30) (= |c_ULTIMATE.start_node_create_~temp~0#1.base| (select (select .cse31 .cse32) .cse33))))))))))) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (let ((.cse48 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse51 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse48 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse49 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse48 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse41 (select (select .cse49 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse45 (+ (select (select .cse51 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse46 (let ((.cse50 (store .cse51 .cse41 (store (select .cse51 .cse41) .cse45 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse50 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse50 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse48 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|)))) (.cse42 (let ((.cse47 (store .cse49 .cse41 (store (select .cse49 .cse41) .cse45 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse47 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse47 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse48 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (let ((.cse43 (select (select .cse42 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse44 (+ (select (select .cse46 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (not (= .cse41 (select (select .cse42 .cse43) .cse44))) (not (= .cse45 (select (select .cse46 .cse43) .cse44)))))))))) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (let ((.cse55 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse62 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse55 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse58 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse55 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse59 (select (select .cse58 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse60 (+ (select (select .cse62 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse56 (let ((.cse61 (store .cse62 .cse59 (store (select .cse62 .cse59) .cse60 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse61 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse61 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse55 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|)))) (.cse52 (let ((.cse57 (store .cse58 .cse59 (store (select .cse58 .cse59) .cse60 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse57 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse57 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse55 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (let ((.cse53 (select (select .cse52 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse54 (+ (select (select .cse56 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (not (= |c_ULTIMATE.start_node_create_~temp~0#1.base| (select (select .cse52 .cse53) .cse54))) (not (= .cse55 (select (select .cse56 .cse53) .cse54)))))))))) (forall ((v_DerPreprocessor_11 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.offset_24| Int) (v_DerPreprocessor_10 Int) (|v_ULTIMATE.start_sll_insert_~last~0#1.base_26| Int)) (let ((.cse70 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse74 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse70 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_11))) (.cse71 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse70 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_10)))) (let ((.cse67 (select (select .cse71 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|)) (.cse72 (+ (select (select .cse74 |c_ULTIMATE.start_sll_insert_~head#1.base|) |c_ULTIMATE.start_sll_insert_~head#1.offset|) 4))) (let ((.cse63 (let ((.cse73 (store .cse74 .cse67 (store (select .cse74 .cse67) .cse72 |c_ULTIMATE.start_node_create_~temp~0#1.offset|)))) (store .cse73 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse73 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse70 |v_ULTIMATE.start_sll_insert_~last~0#1.offset_24|)))) (.cse68 (let ((.cse69 (store .cse71 .cse67 (store (select .cse71 .cse67) .cse72 |c_ULTIMATE.start_node_create_~temp~0#1.base|)))) (store .cse69 |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select .cse69 |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse70 |v_ULTIMATE.start_sll_insert_~last~0#1.base_26|))))) (let ((.cse64 (select (select .cse68 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse65 (+ (select (select .cse63 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse66 (select (select .cse68 .cse64) .cse65))) (or (and (= |c_ULTIMATE.start_node_create_~temp~0#1.offset| (select (select .cse63 .cse64) .cse65)) (= |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse66)) (= .cse67 .cse66)))))))))) is different from true