./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 550de44c598358d86c5215062b141ca9f9605e9c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 550de44c598358d86c5215062b141ca9f9605e9c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 16:05:14,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:05:14,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:05:14,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:05:14,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:05:14,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:05:14,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:05:14,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:05:14,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:05:14,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:05:14,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:05:14,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:05:14,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:05:14,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:05:14,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:05:14,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:05:14,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:05:14,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:05:14,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:05:14,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:05:14,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:05:14,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:05:14,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:05:14,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:05:14,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:05:14,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:05:14,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:05:14,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:05:14,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:05:14,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:05:14,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:05:14,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:05:14,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:05:14,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:05:14,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:05:14,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:05:14,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:05:14,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:05:14,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:05:14,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:05:14,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:05:14,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-12-01 16:05:14,742 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:05:14,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:05:14,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:05:14,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:05:14,745 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:05:14,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:05:14,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:05:14,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 16:05:14,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:05:14,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:05:14,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:05:14,747 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 16:05:14,747 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 16:05:14,748 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 16:05:14,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:05:14,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 16:05:14,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:05:14,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:05:14,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:05:14,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:05:14,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:05:14,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:05:14,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:05:14,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:05:14,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:05:14,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:05:14,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:05:14,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:05:14,752 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-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 550de44c598358d86c5215062b141ca9f9605e9c [2020-12-01 16:05:15,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:05:15,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:05:15,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:05:15,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:05:15,077 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:05:15,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-circular-1.i [2020-12-01 16:05:15,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/4a15d8c2c/be4a3269ce594a01917ef845f4b95050/FLAG71bc8c7e1 [2020-12-01 16:05:15,830 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:05:15,839 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/sv-benchmarks/c/forester-heap/sll-circular-1.i [2020-12-01 16:05:15,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/4a15d8c2c/be4a3269ce594a01917ef845f4b95050/FLAG71bc8c7e1 [2020-12-01 16:05:16,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/4a15d8c2c/be4a3269ce594a01917ef845f4b95050 [2020-12-01 16:05:16,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:05:16,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 16:05:16,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:05:16,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:05:16,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:05:16,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b08151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16, skipping insertion in model container [2020-12-01 16:05:16,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:05:16,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:05:16,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:05:16,671 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:05:16,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:05:16,778 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:05:16,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16 WrapperNode [2020-12-01 16:05:16,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:05:16,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:05:16,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:05:16,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:05:16,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... [2020-12-01 16:05:16,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:05:16,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:05:16,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:05:16,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:05:16,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:05:16,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 16:05:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:05:16,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 16:05:16,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 16:05:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-12-01 16:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-12-01 16:05:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-12-01 16:05:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-12-01 16:05:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-12-01 16:05:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-12-01 16:05:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-12-01 16:05:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-12-01 16:05:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-12-01 16:05:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-12-01 16:05:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-12-01 16:05:16,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-12-01 16:05:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-12-01 16:05:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-12-01 16:05:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-12-01 16:05:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-12-01 16:05:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-12-01 16:05:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-12-01 16:05:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-12-01 16:05:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-12-01 16:05:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-12-01 16:05:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-12-01 16:05:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-12-01 16:05:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-12-01 16:05:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-12-01 16:05:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-12-01 16:05:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-12-01 16:05:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-12-01 16:05:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-12-01 16:05:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-12-01 16:05:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-12-01 16:05:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-12-01 16:05:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-12-01 16:05:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-12-01 16:05:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-12-01 16:05:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-12-01 16:05:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-12-01 16:05:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-12-01 16:05:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-12-01 16:05:16,956 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-12-01 16:05:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-12-01 16:05:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-12-01 16:05:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-12-01 16:05:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-12-01 16:05:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-12-01 16:05:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-12-01 16:05:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-12-01 16:05:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-12-01 16:05:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-12-01 16:05:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-12-01 16:05:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-12-01 16:05:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-12-01 16:05:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-12-01 16:05:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-12-01 16:05:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-12-01 16:05:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-12-01 16:05:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-12-01 16:05:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-12-01 16:05:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-12-01 16:05:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-12-01 16:05:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-12-01 16:05:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-12-01 16:05:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-12-01 16:05:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-12-01 16:05:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-12-01 16:05:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-12-01 16:05:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-12-01 16:05:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-12-01 16:05:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-12-01 16:05:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-12-01 16:05:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-12-01 16:05:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-12-01 16:05:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-12-01 16:05:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-12-01 16:05:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-12-01 16:05:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-12-01 16:05:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-12-01 16:05:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-12-01 16:05:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-12-01 16:05:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-12-01 16:05:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-12-01 16:05:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-12-01 16:05:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-12-01 16:05:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-12-01 16:05:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:05:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:05:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:05:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:05:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:05:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:05:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 16:05:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:05:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:05:17,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:05:17,773 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 16:05:17,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:05:17 BoogieIcfgContainer [2020-12-01 16:05:17,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:05:17,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:05:17,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:05:17,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:05:17,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:05:16" (1/3) ... [2020-12-01 16:05:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2069d08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:05:17, skipping insertion in model container [2020-12-01 16:05:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:05:16" (2/3) ... [2020-12-01 16:05:17,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2069d08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:05:17, skipping insertion in model container [2020-12-01 16:05:17,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:05:17" (3/3) ... [2020-12-01 16:05:17,785 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2020-12-01 16:05:17,802 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:05:17,807 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 44 error locations. [2020-12-01 16:05:17,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2020-12-01 16:05:17,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:05:17,845 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 16:05:17,845 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:05:17,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:05:17,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:05:17,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:05:17,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:05:17,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:05:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-12-01 16:05:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:05:17,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:17,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:17,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:17,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash 300944310, now seen corresponding path program 1 times [2020-12-01 16:05:17,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:17,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911204050] [2020-12-01 16:05:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:18,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911204050] [2020-12-01 16:05:18,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:18,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:05:18,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460584165] [2020-12-01 16:05:18,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:05:18,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:18,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:05:18,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:18,229 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 4 states. [2020-12-01 16:05:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:18,635 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-12-01 16:05:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:05:18,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 16:05:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:18,665 INFO L225 Difference]: With dead ends: 112 [2020-12-01 16:05:18,665 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 16:05:18,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 16:05:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-12-01 16:05:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 16:05:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-12-01 16:05:18,720 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 7 [2020-12-01 16:05:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:18,721 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-12-01 16:05:18,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:05:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-12-01 16:05:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:05:18,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:18,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:18,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:05:18,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash 300944311, now seen corresponding path program 1 times [2020-12-01 16:05:18,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:18,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805579319] [2020-12-01 16:05:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:18,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:18,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805579319] [2020-12-01 16:05:18,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:18,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 16:05:18,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745224831] [2020-12-01 16:05:18,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:05:18,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:05:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:18,887 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 4 states. [2020-12-01 16:05:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:19,169 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-12-01 16:05:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:05:19,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 16:05:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:19,173 INFO L225 Difference]: With dead ends: 107 [2020-12-01 16:05:19,173 INFO L226 Difference]: Without dead ends: 107 [2020-12-01 16:05:19,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-01 16:05:19,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-12-01 16:05:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-01 16:05:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-12-01 16:05:19,186 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 7 [2020-12-01 16:05:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:19,187 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-12-01 16:05:19,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:05:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-12-01 16:05:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:05:19,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:19,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:19,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 16:05:19,189 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823625, now seen corresponding path program 1 times [2020-12-01 16:05:19,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:19,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384121241] [2020-12-01 16:05:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:19,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384121241] [2020-12-01 16:05:19,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:19,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:05:19,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113251163] [2020-12-01 16:05:19,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 16:05:19,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:19,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 16:05:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:05:19,382 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 5 states. [2020-12-01 16:05:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:19,660 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-12-01 16:05:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 16:05:19,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 16:05:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:19,663 INFO L225 Difference]: With dead ends: 93 [2020-12-01 16:05:19,663 INFO L226 Difference]: Without dead ends: 93 [2020-12-01 16:05:19,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:05:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-01 16:05:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-12-01 16:05:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-01 16:05:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-12-01 16:05:19,673 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 12 [2020-12-01 16:05:19,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:19,674 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-12-01 16:05:19,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 16:05:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-12-01 16:05:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 16:05:19,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:19,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:19,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 16:05:19,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:19,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:19,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823624, now seen corresponding path program 1 times [2020-12-01 16:05:19,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:19,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523433485] [2020-12-01 16:05:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:19,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523433485] [2020-12-01 16:05:19,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:19,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:05:19,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055198636] [2020-12-01 16:05:19,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 16:05:19,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:19,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 16:05:19,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:05:19,840 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 5 states. [2020-12-01 16:05:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:20,163 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2020-12-01 16:05:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 16:05:20,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 16:05:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:20,169 INFO L225 Difference]: With dead ends: 103 [2020-12-01 16:05:20,170 INFO L226 Difference]: Without dead ends: 103 [2020-12-01 16:05:20,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:05:20,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-01 16:05:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-12-01 16:05:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 16:05:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-12-01 16:05:20,183 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 12 [2020-12-01 16:05:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:20,183 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-12-01 16:05:20,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 16:05:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-12-01 16:05:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:05:20,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:20,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:20,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 16:05:20,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:20,186 INFO L82 PathProgramCache]: Analyzing trace with hash -565115390, now seen corresponding path program 1 times [2020-12-01 16:05:20,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:20,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191309390] [2020-12-01 16:05:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:20,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:20,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191309390] [2020-12-01 16:05:20,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:20,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 16:05:20,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963947703] [2020-12-01 16:05:20,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:05:20,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:20,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:05:20,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:05:20,354 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 7 states. [2020-12-01 16:05:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:20,866 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-12-01 16:05:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 16:05:20,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-01 16:05:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:20,869 INFO L225 Difference]: With dead ends: 137 [2020-12-01 16:05:20,869 INFO L226 Difference]: Without dead ends: 137 [2020-12-01 16:05:20,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:05:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-01 16:05:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2020-12-01 16:05:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-01 16:05:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-12-01 16:05:20,891 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 15 [2020-12-01 16:05:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:20,891 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-12-01 16:05:20,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:05:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-12-01 16:05:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 16:05:20,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:20,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:20,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 16:05:20,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:20,894 INFO L82 PathProgramCache]: Analyzing trace with hash -565115389, now seen corresponding path program 1 times [2020-12-01 16:05:20,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:20,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076770368] [2020-12-01 16:05:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:21,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076770368] [2020-12-01 16:05:21,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:21,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 16:05:21,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953568830] [2020-12-01 16:05:21,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:05:21,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:21,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:05:21,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:05:21,088 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 7 states. [2020-12-01 16:05:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:21,681 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-12-01 16:05:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:05:21,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-01 16:05:21,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:21,684 INFO L225 Difference]: With dead ends: 135 [2020-12-01 16:05:21,684 INFO L226 Difference]: Without dead ends: 135 [2020-12-01 16:05:21,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:05:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-01 16:05:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2020-12-01 16:05:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-01 16:05:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-12-01 16:05:21,712 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 15 [2020-12-01 16:05:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:21,713 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-12-01 16:05:21,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:05:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-12-01 16:05:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:05:21,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:21,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:21,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 16:05:21,720 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668879, now seen corresponding path program 1 times [2020-12-01 16:05:21,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:21,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112695557] [2020-12-01 16:05:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:21,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:22,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112695557] [2020-12-01 16:05:22,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:22,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 16:05:22,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565409677] [2020-12-01 16:05:22,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:22,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:22,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:22,014 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 9 states. [2020-12-01 16:05:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:22,531 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-12-01 16:05:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 16:05:22,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-01 16:05:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:22,535 INFO L225 Difference]: With dead ends: 127 [2020-12-01 16:05:22,535 INFO L226 Difference]: Without dead ends: 127 [2020-12-01 16:05:22,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-12-01 16:05:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-01 16:05:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 86. [2020-12-01 16:05:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-01 16:05:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-12-01 16:05:22,548 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 17 [2020-12-01 16:05:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:22,549 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-12-01 16:05:22,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-12-01 16:05:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:05:22,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:22,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:22,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 16:05:22,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668878, now seen corresponding path program 1 times [2020-12-01 16:05:22,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:22,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389127450] [2020-12-01 16:05:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:22,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389127450] [2020-12-01 16:05:22,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:22,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 16:05:22,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342142236] [2020-12-01 16:05:22,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:22,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:22,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:22,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:22,825 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 9 states. [2020-12-01 16:05:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:23,491 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-12-01 16:05:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:05:23,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-01 16:05:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:23,494 INFO L225 Difference]: With dead ends: 159 [2020-12-01 16:05:23,494 INFO L226 Difference]: Without dead ends: 159 [2020-12-01 16:05:23,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-01 16:05:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-01 16:05:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2020-12-01 16:05:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 16:05:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-12-01 16:05:23,511 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 17 [2020-12-01 16:05:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:23,511 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-12-01 16:05:23,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-12-01 16:05:23,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 16:05:23,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:23,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:23,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 16:05:23,514 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:23,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2122246388, now seen corresponding path program 1 times [2020-12-01 16:05:23,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:23,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055950004] [2020-12-01 16:05:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:23,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055950004] [2020-12-01 16:05:23,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:23,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 16:05:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947188432] [2020-12-01 16:05:23,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:23,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:23,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:23,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:23,735 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 9 states. [2020-12-01 16:05:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:24,207 INFO L93 Difference]: Finished difference Result 158 states and 173 transitions. [2020-12-01 16:05:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:05:24,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-01 16:05:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:24,209 INFO L225 Difference]: With dead ends: 158 [2020-12-01 16:05:24,209 INFO L226 Difference]: Without dead ends: 158 [2020-12-01 16:05:24,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-01 16:05:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-01 16:05:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2020-12-01 16:05:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 16:05:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2020-12-01 16:05:24,215 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 18 [2020-12-01 16:05:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:24,215 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2020-12-01 16:05:24,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2020-12-01 16:05:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:05:24,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:24,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:24,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 16:05:24,218 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash 650548680, now seen corresponding path program 1 times [2020-12-01 16:05:24,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:24,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824427630] [2020-12-01 16:05:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:24,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824427630] [2020-12-01 16:05:24,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:24,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-01 16:05:24,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691485125] [2020-12-01 16:05:24,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 16:05:24,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:24,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 16:05:24,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:05:24,434 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand 10 states. [2020-12-01 16:05:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:25,056 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-12-01 16:05:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 16:05:25,057 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-12-01 16:05:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:25,059 INFO L225 Difference]: With dead ends: 144 [2020-12-01 16:05:25,059 INFO L226 Difference]: Without dead ends: 144 [2020-12-01 16:05:25,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-12-01 16:05:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-01 16:05:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2020-12-01 16:05:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 16:05:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-12-01 16:05:25,065 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 20 [2020-12-01 16:05:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:25,065 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-12-01 16:05:25,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 16:05:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-12-01 16:05:25,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:05:25,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:25,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:25,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 16:05:25,068 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:25,068 INFO L82 PathProgramCache]: Analyzing trace with hash 650548681, now seen corresponding path program 1 times [2020-12-01 16:05:25,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:25,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493649786] [2020-12-01 16:05:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:25,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493649786] [2020-12-01 16:05:25,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:25,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 16:05:25,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051886514] [2020-12-01 16:05:25,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:25,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:25,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:25,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:25,269 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 9 states. [2020-12-01 16:05:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:25,871 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-12-01 16:05:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:05:25,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-12-01 16:05:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:25,874 INFO L225 Difference]: With dead ends: 154 [2020-12-01 16:05:25,874 INFO L226 Difference]: Without dead ends: 154 [2020-12-01 16:05:25,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-12-01 16:05:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-01 16:05:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 98. [2020-12-01 16:05:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 16:05:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-12-01 16:05:25,883 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 20 [2020-12-01 16:05:25,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:25,883 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-12-01 16:05:25,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-12-01 16:05:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 16:05:25,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:25,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:25,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 16:05:25,891 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:25,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842199, now seen corresponding path program 1 times [2020-12-01 16:05:25,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:25,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373750049] [2020-12-01 16:05:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:26,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373750049] [2020-12-01 16:05:26,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:26,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 16:05:26,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450594329] [2020-12-01 16:05:26,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 16:05:26,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:26,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 16:05:26,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:05:26,034 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 8 states. [2020-12-01 16:05:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:26,488 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2020-12-01 16:05:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 16:05:26,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-01 16:05:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:26,490 INFO L225 Difference]: With dead ends: 134 [2020-12-01 16:05:26,490 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 16:05:26,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:05:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 16:05:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 99. [2020-12-01 16:05:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 16:05:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-12-01 16:05:26,496 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 21 [2020-12-01 16:05:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:26,496 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-12-01 16:05:26,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 16:05:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-12-01 16:05:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 16:05:26,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:26,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:26,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 16:05:26,500 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:26,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:26,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842198, now seen corresponding path program 1 times [2020-12-01 16:05:26,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:26,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812497219] [2020-12-01 16:05:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:26,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812497219] [2020-12-01 16:05:26,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:26,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-01 16:05:26,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383716240] [2020-12-01 16:05:26,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 16:05:26,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:26,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 16:05:26,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:05:26,771 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 12 states. [2020-12-01 16:05:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:27,474 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2020-12-01 16:05:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 16:05:27,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-12-01 16:05:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:27,476 INFO L225 Difference]: With dead ends: 144 [2020-12-01 16:05:27,476 INFO L226 Difference]: Without dead ends: 144 [2020-12-01 16:05:27,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-12-01 16:05:27,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-01 16:05:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-12-01 16:05:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-01 16:05:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2020-12-01 16:05:27,482 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 21 [2020-12-01 16:05:27,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:27,483 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2020-12-01 16:05:27,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 16:05:27,483 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2020-12-01 16:05:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:05:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:27,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:27,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 16:05:27,484 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1280392747, now seen corresponding path program 1 times [2020-12-01 16:05:27,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:27,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891990197] [2020-12-01 16:05:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:27,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891990197] [2020-12-01 16:05:27,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:27,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 16:05:27,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657700860] [2020-12-01 16:05:27,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:05:27,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:27,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:05:27,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:05:27,572 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand 7 states. [2020-12-01 16:05:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:27,954 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2020-12-01 16:05:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:05:27,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-01 16:05:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:27,959 INFO L225 Difference]: With dead ends: 150 [2020-12-01 16:05:27,959 INFO L226 Difference]: Without dead ends: 150 [2020-12-01 16:05:27,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:05:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-01 16:05:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 117. [2020-12-01 16:05:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-01 16:05:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2020-12-01 16:05:27,968 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 22 [2020-12-01 16:05:27,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:27,968 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2020-12-01 16:05:27,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:05:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2020-12-01 16:05:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 16:05:27,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:27,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:27,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 16:05:27,974 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:27,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1589069240, now seen corresponding path program 1 times [2020-12-01 16:05:27,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:27,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783403775] [2020-12-01 16:05:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:28,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783403775] [2020-12-01 16:05:28,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:28,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 16:05:28,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117097918] [2020-12-01 16:05:28,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 16:05:28,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:28,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 16:05:28,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:05:28,249 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand 13 states. [2020-12-01 16:05:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:28,927 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2020-12-01 16:05:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 16:05:28,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2020-12-01 16:05:28,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:28,929 INFO L225 Difference]: With dead ends: 153 [2020-12-01 16:05:28,929 INFO L226 Difference]: Without dead ends: 153 [2020-12-01 16:05:28,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-12-01 16:05:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-01 16:05:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-12-01 16:05:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-01 16:05:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-12-01 16:05:28,936 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 23 [2020-12-01 16:05:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:28,936 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-12-01 16:05:28,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 16:05:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-12-01 16:05:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 16:05:28,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:28,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:28,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 16:05:28,938 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:28,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2016506411, now seen corresponding path program 1 times [2020-12-01 16:05:28,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:28,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998754173] [2020-12-01 16:05:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:29,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998754173] [2020-12-01 16:05:29,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:29,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 16:05:29,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449337331] [2020-12-01 16:05:29,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:29,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:29,103 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 9 states. [2020-12-01 16:05:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:29,645 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-12-01 16:05:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:05:29,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-12-01 16:05:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:29,648 INFO L225 Difference]: With dead ends: 146 [2020-12-01 16:05:29,648 INFO L226 Difference]: Without dead ends: 146 [2020-12-01 16:05:29,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-12-01 16:05:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-01 16:05:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-12-01 16:05:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-01 16:05:29,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2020-12-01 16:05:29,654 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 24 [2020-12-01 16:05:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:29,655 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2020-12-01 16:05:29,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:29,655 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2020-12-01 16:05:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:05:29,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:29,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:29,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 16:05:29,657 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:29,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1912764758, now seen corresponding path program 1 times [2020-12-01 16:05:29,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:29,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963292326] [2020-12-01 16:05:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:29,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963292326] [2020-12-01 16:05:29,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:29,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-01 16:05:29,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183609666] [2020-12-01 16:05:29,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:29,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:29,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:05:29,799 INFO L87 Difference]: Start difference. First operand 119 states and 147 transitions. Second operand 9 states. [2020-12-01 16:05:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:30,176 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2020-12-01 16:05:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 16:05:30,177 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-01 16:05:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:30,178 INFO L225 Difference]: With dead ends: 138 [2020-12-01 16:05:30,178 INFO L226 Difference]: Without dead ends: 138 [2020-12-01 16:05:30,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:05:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-01 16:05:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-12-01 16:05:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-01 16:05:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-12-01 16:05:30,187 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 25 [2020-12-01 16:05:30,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:30,188 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-12-01 16:05:30,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-12-01 16:05:30,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 16:05:30,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:30,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:30,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 16:05:30,189 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:30,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:30,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2015122859, now seen corresponding path program 1 times [2020-12-01 16:05:30,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:30,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262849681] [2020-12-01 16:05:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:30,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262849681] [2020-12-01 16:05:30,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:30,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:05:30,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726093569] [2020-12-01 16:05:30,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:05:30,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:05:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:30,256 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 4 states. [2020-12-01 16:05:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:30,391 INFO L93 Difference]: Finished difference Result 124 states and 152 transitions. [2020-12-01 16:05:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:05:30,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-01 16:05:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:30,393 INFO L225 Difference]: With dead ends: 124 [2020-12-01 16:05:30,393 INFO L226 Difference]: Without dead ends: 124 [2020-12-01 16:05:30,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-01 16:05:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-01 16:05:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-01 16:05:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2020-12-01 16:05:30,399 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 26 [2020-12-01 16:05:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:30,400 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2020-12-01 16:05:30,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:05:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2020-12-01 16:05:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:05:30,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:30,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:30,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 16:05:30,401 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:30,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1043329764, now seen corresponding path program 1 times [2020-12-01 16:05:30,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:30,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795133594] [2020-12-01 16:05:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:30,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795133594] [2020-12-01 16:05:30,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:30,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 16:05:30,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098006702] [2020-12-01 16:05:30,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:05:30,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:30,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:05:30,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:05:30,485 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand 6 states. [2020-12-01 16:05:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:30,684 INFO L93 Difference]: Finished difference Result 123 states and 149 transitions. [2020-12-01 16:05:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:05:30,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-01 16:05:30,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:30,686 INFO L225 Difference]: With dead ends: 123 [2020-12-01 16:05:30,686 INFO L226 Difference]: Without dead ends: 123 [2020-12-01 16:05:30,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:05:30,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-01 16:05:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-12-01 16:05:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-01 16:05:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2020-12-01 16:05:30,692 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 25 [2020-12-01 16:05:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:30,692 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2020-12-01 16:05:30,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:05:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2020-12-01 16:05:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:05:30,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:30,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:30,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 16:05:30,694 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1043329763, now seen corresponding path program 1 times [2020-12-01 16:05:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:30,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857135949] [2020-12-01 16:05:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:30,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857135949] [2020-12-01 16:05:30,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:30,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-01 16:05:30,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876220321] [2020-12-01 16:05:30,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 16:05:30,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:30,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 16:05:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-01 16:05:30,933 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand 11 states. [2020-12-01 16:05:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:31,477 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-01 16:05:31,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 16:05:31,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-01 16:05:31,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:31,479 INFO L225 Difference]: With dead ends: 141 [2020-12-01 16:05:31,479 INFO L226 Difference]: Without dead ends: 141 [2020-12-01 16:05:31,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-12-01 16:05:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-01 16:05:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-12-01 16:05:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-01 16:05:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2020-12-01 16:05:31,484 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 25 [2020-12-01 16:05:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:31,484 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2020-12-01 16:05:31,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 16:05:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2020-12-01 16:05:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 16:05:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:31,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:31,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-01 16:05:31,486 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash -928172417, now seen corresponding path program 1 times [2020-12-01 16:05:31,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:31,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629280620] [2020-12-01 16:05:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:31,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629280620] [2020-12-01 16:05:31,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:31,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:05:31,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512140559] [2020-12-01 16:05:31,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:05:31,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:31,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:05:31,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:31,542 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand 4 states. [2020-12-01 16:05:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:31,703 INFO L93 Difference]: Finished difference Result 188 states and 220 transitions. [2020-12-01 16:05:31,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:05:31,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-01 16:05:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:31,706 INFO L225 Difference]: With dead ends: 188 [2020-12-01 16:05:31,706 INFO L226 Difference]: Without dead ends: 188 [2020-12-01 16:05:31,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:05:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-01 16:05:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 135. [2020-12-01 16:05:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-01 16:05:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2020-12-01 16:05:31,713 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 25 [2020-12-01 16:05:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:31,714 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2020-12-01 16:05:31,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:05:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2020-12-01 16:05:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 16:05:31,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:31,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:31,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-01 16:05:31,715 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:31,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:31,716 INFO L82 PathProgramCache]: Analyzing trace with hash 832417806, now seen corresponding path program 1 times [2020-12-01 16:05:31,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485523411] [2020-12-01 16:05:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:31,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485523411] [2020-12-01 16:05:31,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:31,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-01 16:05:31,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090584067] [2020-12-01 16:05:31,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 16:05:31,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 16:05:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:05:31,926 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand 10 states. [2020-12-01 16:05:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:32,482 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2020-12-01 16:05:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 16:05:32,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-01 16:05:32,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:32,484 INFO L225 Difference]: With dead ends: 151 [2020-12-01 16:05:32,484 INFO L226 Difference]: Without dead ends: 151 [2020-12-01 16:05:32,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-01 16:05:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-01 16:05:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 135. [2020-12-01 16:05:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-01 16:05:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 161 transitions. [2020-12-01 16:05:32,489 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 161 transitions. Word has length 26 [2020-12-01 16:05:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:32,490 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 161 transitions. [2020-12-01 16:05:32,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 16:05:32,490 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 161 transitions. [2020-12-01 16:05:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 16:05:32,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:32,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:32,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-01 16:05:32,491 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1953522083, now seen corresponding path program 1 times [2020-12-01 16:05:32,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:32,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386495089] [2020-12-01 16:05:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:32,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386495089] [2020-12-01 16:05:32,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:32,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 16:05:32,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833129068] [2020-12-01 16:05:32,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:05:32,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:05:32,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:05:32,569 INFO L87 Difference]: Start difference. First operand 135 states and 161 transitions. Second operand 7 states. [2020-12-01 16:05:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:32,886 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-12-01 16:05:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 16:05:32,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-12-01 16:05:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:32,888 INFO L225 Difference]: With dead ends: 138 [2020-12-01 16:05:32,888 INFO L226 Difference]: Without dead ends: 138 [2020-12-01 16:05:32,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-01 16:05:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-01 16:05:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-12-01 16:05:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-01 16:05:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2020-12-01 16:05:32,894 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 27 [2020-12-01 16:05:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:32,894 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2020-12-01 16:05:32,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:05:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2020-12-01 16:05:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 16:05:32,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:32,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:32,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-01 16:05:32,896 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1953522082, now seen corresponding path program 1 times [2020-12-01 16:05:32,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:32,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215509536] [2020-12-01 16:05:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:33,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:33,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215509536] [2020-12-01 16:05:33,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614310338] [2020-12-01 16:05:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:33,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 16:05:33,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:33,696 INFO L382 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 23 treesize of output 15 [2020-12-01 16:05:33,698 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:33,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:33,711 INFO L382 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 28 treesize of output 16 [2020-12-01 16:05:33,714 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:33,734 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:33,735 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:33,735 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:13 [2020-12-01 16:05:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:33,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 16:05:33,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2020-12-01 16:05:33,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976492473] [2020-12-01 16:05:33,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:05:33,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:33,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:05:33,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-01 16:05:33,801 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 6 states. [2020-12-01 16:05:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:34,102 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2020-12-01 16:05:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:05:34,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-01 16:05:34,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:34,104 INFO L225 Difference]: With dead ends: 136 [2020-12-01 16:05:34,104 INFO L226 Difference]: Without dead ends: 136 [2020-12-01 16:05:34,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-12-01 16:05:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-01 16:05:34,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-12-01 16:05:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-01 16:05:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2020-12-01 16:05:34,117 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 27 [2020-12-01 16:05:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:34,118 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2020-12-01 16:05:34,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:05:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2020-12-01 16:05:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 16:05:34,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:34,119 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:34,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-01 16:05:34,341 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659237, now seen corresponding path program 1 times [2020-12-01 16:05:34,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:34,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686488581] [2020-12-01 16:05:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:34,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:34,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:34,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686488581] [2020-12-01 16:05:34,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773025623] [2020-12-01 16:05:34,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-01 16:05:34,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:34,867 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:34,868 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-01 16:05:34,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:34,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 16:05:34,896 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:34,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:34,929 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-01 16:05:34,931 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:34,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2020-12-01 16:05:34,982 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:05:34,983 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:34,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,000 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2020-12-01 16:05:35,151 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,151 INFO L382 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 36 treesize of output 51 [2020-12-01 16:05:35,156 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,170 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:29 [2020-12-01 16:05:35,234 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-01 16:05:35,234 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:05:35,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,248 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,249 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:48, output treesize:29 [2020-12-01 16:05:35,336 INFO L348 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2020-12-01 16:05:35,336 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2020-12-01 16:05:35,346 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-01 16:05:35,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 16:05:35,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,362 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,364 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:05:35,364 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:34 [2020-12-01 16:05:35,473 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,473 INFO L382 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 36 treesize of output 31 [2020-12-01 16:05:35,476 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:35,483 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:35,488 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:05:35,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:15 [2020-12-01 16:05:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:35,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:05:35,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2020-12-01 16:05:35,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480097528] [2020-12-01 16:05:35,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-01 16:05:35,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:35,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-01 16:05:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2020-12-01 16:05:35,616 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand 23 states. [2020-12-01 16:05:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:51,143 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2020-12-01 16:05:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-01 16:05:51,144 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2020-12-01 16:05:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:51,145 INFO L225 Difference]: With dead ends: 228 [2020-12-01 16:05:51,146 INFO L226 Difference]: Without dead ends: 228 [2020-12-01 16:05:51,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2020-12-01 16:05:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-01 16:05:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 158. [2020-12-01 16:05:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-01 16:05:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-12-01 16:05:51,154 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 28 [2020-12-01 16:05:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:51,154 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-12-01 16:05:51,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-01 16:05:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-12-01 16:05:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 16:05:51,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:51,155 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:51,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-01 16:05:51,381 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659238, now seen corresponding path program 1 times [2020-12-01 16:05:51,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:51,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008394554] [2020-12-01 16:05:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:51,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:51,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008394554] [2020-12-01 16:05:51,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526233431] [2020-12-01 16:05:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:51,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 16:05:51,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:52,034 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_48|], 1=[|v_#valid_58|]} [2020-12-01 16:05:52,039 INFO L382 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 [2020-12-01 16:05:52,040 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,067 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,068 INFO L382 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 11 treesize of output 15 [2020-12-01 16:05:52,072 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:52,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:52,079 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,092 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,093 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2020-12-01 16:05:52,117 INFO L382 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 [2020-12-01 16:05:52,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,134 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,139 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:05:52,140 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,157 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,157 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2020-12-01 16:05:52,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:52,294 INFO L382 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 26 treesize of output 21 [2020-12-01 16:05:52,296 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,346 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,346 INFO L382 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 36 treesize of output 51 [2020-12-01 16:05:52,355 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,375 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:45 [2020-12-01 16:05:52,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:52,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 24 [2020-12-01 16:05:52,453 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,481 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:52,490 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:05:52,493 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,515 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,517 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,517 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:90, output treesize:48 [2020-12-01 16:05:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:52,605 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2020-12-01 16:05:52,607 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,630 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:52,666 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,667 INFO L382 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 82 treesize of output 105 [2020-12-01 16:05:52,671 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-01 16:05:52,672 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 16:05:52,673 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,696 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:05:52,696 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:123, output treesize:61 [2020-12-01 16:05:52,776 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,776 INFO L382 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 58 treesize of output 45 [2020-12-01 16:05:52,779 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,797 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,801 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-12-01 16:05:52,803 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,816 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:52,818 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:52,818 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:75, output treesize:14 [2020-12-01 16:05:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:52,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:05:52,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2020-12-01 16:05:52,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472209616] [2020-12-01 16:05:52,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-01 16:05:52,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:52,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-01 16:05:52,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-12-01 16:05:52,830 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 20 states. [2020-12-01 16:05:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:54,198 INFO L93 Difference]: Finished difference Result 228 states and 261 transitions. [2020-12-01 16:05:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 16:05:54,199 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 28 [2020-12-01 16:05:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:54,200 INFO L225 Difference]: With dead ends: 228 [2020-12-01 16:05:54,201 INFO L226 Difference]: Without dead ends: 228 [2020-12-01 16:05:54,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=750, Unknown=0, NotChecked=0, Total=930 [2020-12-01 16:05:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-01 16:05:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 171. [2020-12-01 16:05:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-01 16:05:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2020-12-01 16:05:54,209 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 28 [2020-12-01 16:05:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:54,210 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2020-12-01 16:05:54,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-01 16:05:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2020-12-01 16:05:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 16:05:54,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:54,211 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:54,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-01 16:05:54,433 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash -752289896, now seen corresponding path program 1 times [2020-12-01 16:05:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904460881] [2020-12-01 16:05:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:54,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904460881] [2020-12-01 16:05:54,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162269688] [2020-12-01 16:05:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:54,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 16:05:54,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:54,940 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:54,941 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-01 16:05:54,943 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:54,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:54,947 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:54,954 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:54,955 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:54,955 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:15 [2020-12-01 16:05:54,991 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2020-12-01 16:05:54,991 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,002 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,003 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:23 [2020-12-01 16:05:55,119 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,119 INFO L382 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 35 treesize of output 50 [2020-12-01 16:05:55,130 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,140 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,141 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:23 [2020-12-01 16:05:55,197 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-01 16:05:55,197 INFO L382 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 1 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:05:55,199 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,208 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2020-12-01 16:05:55,271 INFO L348 Elim1Store]: treesize reduction 38, result has 56.3 percent of original size [2020-12-01 16:05:55,272 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 78 [2020-12-01 16:05:55,279 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-12-01 16:05:55,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 16:05:55,281 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:05:55,288 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:28 [2020-12-01 16:05:55,344 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,345 INFO L382 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 35 treesize of output 30 [2020-12-01 16:05:55,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:55,353 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:55,354 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2020-12-01 16:05:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:55,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:05:55,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2020-12-01 16:05:55,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073517309] [2020-12-01 16:05:55,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-01 16:05:55,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-01 16:05:55,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-12-01 16:05:55,364 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand 21 states. [2020-12-01 16:05:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:56,392 INFO L93 Difference]: Finished difference Result 227 states and 259 transitions. [2020-12-01 16:05:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 16:05:56,392 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 29 [2020-12-01 16:05:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:56,394 INFO L225 Difference]: With dead ends: 227 [2020-12-01 16:05:56,394 INFO L226 Difference]: Without dead ends: 227 [2020-12-01 16:05:56,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-12-01 16:05:56,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-01 16:05:56,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 171. [2020-12-01 16:05:56,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-12-01 16:05:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 203 transitions. [2020-12-01 16:05:56,413 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 203 transitions. Word has length 29 [2020-12-01 16:05:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:56,414 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 203 transitions. [2020-12-01 16:05:56,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-01 16:05:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 203 transitions. [2020-12-01 16:05:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 16:05:56,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:56,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:56,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:56,625 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:56,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash -434010654, now seen corresponding path program 1 times [2020-12-01 16:05:56,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:56,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840406439] [2020-12-01 16:05:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:56,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840406439] [2020-12-01 16:05:56,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184553679] [2020-12-01 16:05:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 16:05:56,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:57,132 INFO L382 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 25 treesize of output 17 [2020-12-01 16:05:57,133 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:57,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:57,143 INFO L382 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 21 treesize of output 13 [2020-12-01 16:05:57,145 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:57,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:57,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:57,149 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:9 [2020-12-01 16:05:57,198 INFO L382 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 19 treesize of output 7 [2020-12-01 16:05:57,199 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:57,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:57,202 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:57,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-12-01 16:05:57,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:57,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 16:05:57,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2020-12-01 16:05:57,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378941270] [2020-12-01 16:05:57,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 16:05:57,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 16:05:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-12-01 16:05:57,230 INFO L87 Difference]: Start difference. First operand 171 states and 203 transitions. Second operand 9 states. [2020-12-01 16:05:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:57,635 INFO L93 Difference]: Finished difference Result 190 states and 223 transitions. [2020-12-01 16:05:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:05:57,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-12-01 16:05:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:57,637 INFO L225 Difference]: With dead ends: 190 [2020-12-01 16:05:57,637 INFO L226 Difference]: Without dead ends: 190 [2020-12-01 16:05:57,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-12-01 16:05:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-01 16:05:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 185. [2020-12-01 16:05:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-01 16:05:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2020-12-01 16:05:57,645 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 29 [2020-12-01 16:05:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:57,646 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2020-12-01 16:05:57,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 16:05:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2020-12-01 16:05:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 16:05:57,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:57,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:57,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-01 16:05:57,873 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:57,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1162533043, now seen corresponding path program 1 times [2020-12-01 16:05:57,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:57,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492427811] [2020-12-01 16:05:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:58,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492427811] [2020-12-01 16:05:58,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:05:58,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-01 16:05:58,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999285538] [2020-12-01 16:05:58,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 16:05:58,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:05:58,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 16:05:58,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:05:58,180 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand 12 states. [2020-12-01 16:05:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:05:58,785 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2020-12-01 16:05:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 16:05:58,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-12-01 16:05:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:05:58,787 INFO L225 Difference]: With dead ends: 197 [2020-12-01 16:05:58,788 INFO L226 Difference]: Without dead ends: 197 [2020-12-01 16:05:58,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2020-12-01 16:05:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-01 16:05:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2020-12-01 16:05:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-01 16:05:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 218 transitions. [2020-12-01 16:05:58,796 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 218 transitions. Word has length 30 [2020-12-01 16:05:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:05:58,796 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 218 transitions. [2020-12-01 16:05:58,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 16:05:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 218 transitions. [2020-12-01 16:05:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 16:05:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:05:58,797 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:05:58,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-01 16:05:58,798 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:05:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:05:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1376222380, now seen corresponding path program 1 times [2020-12-01 16:05:58,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:05:58,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718395794] [2020-12-01 16:05:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:05:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:05:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:05:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718395794] [2020-12-01 16:05:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410093473] [2020-12-01 16:05:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:05:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:05:59,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-01 16:05:59,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:05:59,354 INFO L382 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 [2020-12-01 16:05:59,355 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:05:59,372 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_49|], 3=[|v_#valid_61|]} [2020-12-01 16:05:59,376 INFO L382 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 [2020-12-01 16:05:59,377 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,418 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,419 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-01 16:05:59,420 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:05:59,432 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,451 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,453 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2020-12-01 16:05:59,506 INFO L382 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 [2020-12-01 16:05:59,507 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,532 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,536 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:05:59,537 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,560 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,561 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,562 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:45 [2020-12-01 16:05:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:59,693 INFO L382 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 26 treesize of output 21 [2020-12-01 16:05:59,700 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,738 INFO L625 ElimStorePlain]: treesize reduction 3, result has 95.7 percent of original size [2020-12-01 16:05:59,757 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,757 INFO L382 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 45 treesize of output 56 [2020-12-01 16:05:59,761 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,779 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,780 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,780 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:51 [2020-12-01 16:05:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:59,851 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:05:59,853 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,878 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:05:59,883 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:05:59,890 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,917 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,917 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:89, output treesize:51 [2020-12-01 16:05:59,958 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,959 INFO L382 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 126 [2020-12-01 16:05:59,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:05:59,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:05:59,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:00,028 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:00,029 INFO L382 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 96 treesize of output 135 [2020-12-01 16:06:00,033 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-12-01 16:06:00,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 16:06:00,036 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:00,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:00,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:00,058 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:147, output treesize:69 [2020-12-01 16:06:00,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 24 [2020-12-01 16:06:00,146 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:00,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:00,165 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:00,166 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:83, output treesize:53 [2020-12-01 16:06:00,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-12-01 16:06:00,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:00,342 INFO L625 ElimStorePlain]: treesize reduction 3, result has 93.6 percent of original size [2020-12-01 16:06:00,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:00,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:60, output treesize:44 [2020-12-01 16:06:00,417 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:00,418 INFO L382 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 40 treesize of output 31 [2020-12-01 16:06:00,421 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:00,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:00,433 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:00,434 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:15 [2020-12-01 16:06:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:00,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:00,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-12-01 16:06:00,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153855941] [2020-12-01 16:06:00,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-01 16:06:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-01 16:06:00,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-12-01 16:06:00,479 INFO L87 Difference]: Start difference. First operand 185 states and 218 transitions. Second operand 25 states. [2020-12-01 16:06:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:04,482 INFO L93 Difference]: Finished difference Result 244 states and 278 transitions. [2020-12-01 16:06:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 16:06:04,483 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-12-01 16:06:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:04,485 INFO L225 Difference]: With dead ends: 244 [2020-12-01 16:06:04,485 INFO L226 Difference]: Without dead ends: 244 [2020-12-01 16:06:04,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2020-12-01 16:06:04,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-01 16:06:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 185. [2020-12-01 16:06:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-01 16:06:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-12-01 16:06:04,492 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 31 [2020-12-01 16:06:04,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:04,492 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-12-01 16:06:04,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-01 16:06:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-12-01 16:06:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 16:06:04,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:04,494 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:04,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:04,709 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:04,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1376222379, now seen corresponding path program 1 times [2020-12-01 16:06:04,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:04,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444018829] [2020-12-01 16:06:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:05,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444018829] [2020-12-01 16:06:05,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303306558] [2020-12-01 16:06:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:05,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-01 16:06:05,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:05,238 INFO L382 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 [2020-12-01 16:06:05,239 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,241 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:05,384 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,385 INFO L382 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 11 treesize of output 15 [2020-12-01 16:06:05,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:06:05,397 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,420 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2020-12-01 16:06:05,422 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,440 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,441 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,441 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2020-12-01 16:06:05,503 INFO L382 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 [2020-12-01 16:06:05,504 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,526 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,532 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:06:05,533 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,555 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,555 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:41 [2020-12-01 16:06:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:05,733 INFO L382 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 26 treesize of output 21 [2020-12-01 16:06:05,735 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,793 INFO L625 ElimStorePlain]: treesize reduction 3, result has 95.7 percent of original size [2020-12-01 16:06:05,828 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,829 INFO L382 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 36 treesize of output 51 [2020-12-01 16:06:05,832 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,861 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,862 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:55 [2020-12-01 16:06:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:05,949 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 24 [2020-12-01 16:06:05,952 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:05,985 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:05,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:05,993 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:06:05,994 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,020 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,021 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,021 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:93, output treesize:51 [2020-12-01 16:06:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:06,121 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,126 INFO L382 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 126 treesize of output 157 [2020-12-01 16:06:06,129 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[7, 3, 2, 1] term [2020-12-01 16:06:06,130 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 16:06:06,131 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,188 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,189 INFO L382 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 95 [2020-12-01 16:06:06,192 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,210 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,211 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,211 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:143, output treesize:65 [2020-12-01 16:06:06,587 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,588 INFO L382 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 78 treesize of output 57 [2020-12-01 16:06:06,590 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-01 16:06:06,593 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:06,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2020-12-01 16:06:06,621 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:06,635 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:06,637 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:06,638 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:95, output treesize:20 [2020-12-01 16:06:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:06,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:06,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2020-12-01 16:06:06,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514262468] [2020-12-01 16:06:06,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-01 16:06:06,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:06,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-01 16:06:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-12-01 16:06:06,714 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 28 states. [2020-12-01 16:06:07,299 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-12-01 16:06:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:13,212 INFO L93 Difference]: Finished difference Result 245 states and 278 transitions. [2020-12-01 16:06:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-01 16:06:13,220 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 31 [2020-12-01 16:06:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:13,222 INFO L225 Difference]: With dead ends: 245 [2020-12-01 16:06:13,222 INFO L226 Difference]: Without dead ends: 245 [2020-12-01 16:06:13,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=244, Invalid=1315, Unknown=1, NotChecked=0, Total=1560 [2020-12-01 16:06:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-12-01 16:06:13,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 185. [2020-12-01 16:06:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-01 16:06:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 216 transitions. [2020-12-01 16:06:13,230 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 216 transitions. Word has length 31 [2020-12-01 16:06:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:13,231 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 216 transitions. [2020-12-01 16:06:13,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-12-01 16:06:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 216 transitions. [2020-12-01 16:06:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 16:06:13,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:13,232 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:13,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:13,445 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 286764382, now seen corresponding path program 1 times [2020-12-01 16:06:13,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:13,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22940159] [2020-12-01 16:06:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:13,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 16:06:13,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22940159] [2020-12-01 16:06:13,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:13,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-01 16:06:13,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700040101] [2020-12-01 16:06:13,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 16:06:13,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:13,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 16:06:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-01 16:06:13,576 INFO L87 Difference]: Start difference. First operand 185 states and 216 transitions. Second operand 8 states. [2020-12-01 16:06:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:14,022 INFO L93 Difference]: Finished difference Result 222 states and 256 transitions. [2020-12-01 16:06:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 16:06:14,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-01 16:06:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:14,024 INFO L225 Difference]: With dead ends: 222 [2020-12-01 16:06:14,024 INFO L226 Difference]: Without dead ends: 222 [2020-12-01 16:06:14,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-01 16:06:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-01 16:06:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 185. [2020-12-01 16:06:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-01 16:06:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 215 transitions. [2020-12-01 16:06:14,031 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 215 transitions. Word has length 32 [2020-12-01 16:06:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:14,031 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 215 transitions. [2020-12-01 16:06:14,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 16:06:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 215 transitions. [2020-12-01 16:06:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 16:06:14,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:14,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:14,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-01 16:06:14,033 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 499369434, now seen corresponding path program 1 times [2020-12-01 16:06:14,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:14,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291330668] [2020-12-01 16:06:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:14,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:14,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291330668] [2020-12-01 16:06:14,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646772869] [2020-12-01 16:06:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:14,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 16:06:14,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:14,421 INFO L382 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 [2020-12-01 16:06:14,422 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,427 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,432 INFO L382 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 [2020-12-01 16:06:14,433 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,440 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,440 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-12-01 16:06:14,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:14,465 INFO L382 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 [2020-12-01 16:06:14,467 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:14,479 INFO L382 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 [2020-12-01 16:06:14,480 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,485 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,485 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:53, output treesize:15 [2020-12-01 16:06:14,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:14,530 INFO L382 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 [2020-12-01 16:06:14,531 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:14,552 INFO L382 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 [2020-12-01 16:06:14,553 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,562 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,564 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:56, output treesize:15 [2020-12-01 16:06:14,574 INFO L382 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 [2020-12-01 16:06:14,575 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,583 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,584 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:14,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:15 [2020-12-01 16:06:14,747 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,748 INFO L382 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 26 treesize of output 21 [2020-12-01 16:06:14,749 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,755 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:14,756 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:14,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:3 [2020-12-01 16:06:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:14,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:14,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2020-12-01 16:06:14,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541023312] [2020-12-01 16:06:14,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-01 16:06:14,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:14,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-01 16:06:14,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-01 16:06:14,847 INFO L87 Difference]: Start difference. First operand 185 states and 215 transitions. Second operand 19 states. [2020-12-01 16:06:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:16,197 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2020-12-01 16:06:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-01 16:06:16,198 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 33 [2020-12-01 16:06:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:16,200 INFO L225 Difference]: With dead ends: 222 [2020-12-01 16:06:16,200 INFO L226 Difference]: Without dead ends: 222 [2020-12-01 16:06:16,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2020-12-01 16:06:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-12-01 16:06:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 184. [2020-12-01 16:06:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-01 16:06:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 213 transitions. [2020-12-01 16:06:16,207 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 213 transitions. Word has length 33 [2020-12-01 16:06:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:16,207 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 213 transitions. [2020-12-01 16:06:16,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-01 16:06:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 213 transitions. [2020-12-01 16:06:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 16:06:16,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:16,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:16,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-01 16:06:16,409 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:16,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1699416668, now seen corresponding path program 1 times [2020-12-01 16:06:16,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:16,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208385090] [2020-12-01 16:06:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:16,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208385090] [2020-12-01 16:06:16,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277504605] [2020-12-01 16:06:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:16,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-01 16:06:16,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:16,859 INFO L382 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 [2020-12-01 16:06:16,860 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,862 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:16,863 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,863 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:16,889 INFO L382 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 [2020-12-01 16:06:16,890 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,899 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:16,903 INFO L382 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 [2020-12-01 16:06:16,904 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,912 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:16,913 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,913 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:20 [2020-12-01 16:06:16,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:16,932 INFO L382 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 [2020-12-01 16:06:16,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:16,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:16,952 INFO L382 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 36 treesize of output 16 [2020-12-01 16:06:16,953 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,961 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:16,962 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:16,962 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:24 [2020-12-01 16:06:17,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:17,018 INFO L382 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 [2020-12-01 16:06:17,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:17,039 INFO L382 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 36 treesize of output 16 [2020-12-01 16:06:17,040 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,053 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,054 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:65, output treesize:20 [2020-12-01 16:06:17,251 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,252 INFO L382 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 38 treesize of output 29 [2020-12-01 16:06:17,253 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,264 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,265 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:17,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:28 [2020-12-01 16:06:17,392 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,393 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2020-12-01 16:06:17,395 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,400 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:17,401 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:17,401 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2020-12-01 16:06:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:17,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:17,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2020-12-01 16:06:17,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573362660] [2020-12-01 16:06:17,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-01 16:06:17,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-01 16:06:17,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-12-01 16:06:17,411 INFO L87 Difference]: Start difference. First operand 184 states and 213 transitions. Second operand 18 states. [2020-12-01 16:06:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:18,423 INFO L93 Difference]: Finished difference Result 219 states and 242 transitions. [2020-12-01 16:06:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 16:06:18,423 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2020-12-01 16:06:18,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:18,425 INFO L225 Difference]: With dead ends: 219 [2020-12-01 16:06:18,425 INFO L226 Difference]: Without dead ends: 219 [2020-12-01 16:06:18,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-12-01 16:06:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-01 16:06:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 184. [2020-12-01 16:06:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-01 16:06:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 212 transitions. [2020-12-01 16:06:18,432 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 212 transitions. Word has length 34 [2020-12-01 16:06:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:18,433 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 212 transitions. [2020-12-01 16:06:18,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-01 16:06:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 212 transitions. [2020-12-01 16:06:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 16:06:18,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:18,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:18,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:18,649 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:18,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1699416667, now seen corresponding path program 1 times [2020-12-01 16:06:18,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:18,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781828465] [2020-12-01 16:06:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:18,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781828465] [2020-12-01 16:06:18,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013179838] [2020-12-01 16:06:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:19,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 16:06:19,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:19,146 INFO L382 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 [2020-12-01 16:06:19,147 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,160 INFO L382 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 [2020-12-01 16:06:19,161 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,170 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,171 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,171 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-12-01 16:06:19,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:19,209 INFO L382 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 [2020-12-01 16:06:19,210 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:19,228 INFO L382 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 [2020-12-01 16:06:19,230 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,238 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,239 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:56, output treesize:18 [2020-12-01 16:06:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:19,299 INFO L382 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 [2020-12-01 16:06:19,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:06:19,323 INFO L382 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 [2020-12-01 16:06:19,324 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,334 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:19,336 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:19,336 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:59, output treesize:18 [2020-12-01 16:06:23,686 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:23,687 INFO L382 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 53 treesize of output 40 [2020-12-01 16:06:23,688 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:23,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:23,711 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:23,712 INFO L382 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 30 treesize of output 25 [2020-12-01 16:06:23,713 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:23,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:23,725 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:23,725 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:11 [2020-12-01 16:06:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 16:06:23,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:23,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2020-12-01 16:06:23,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126527923] [2020-12-01 16:06:23,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-01 16:06:23,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-01 16:06:23,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=292, Unknown=2, NotChecked=0, Total=342 [2020-12-01 16:06:23,768 INFO L87 Difference]: Start difference. First operand 184 states and 212 transitions. Second operand 19 states. [2020-12-01 16:06:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:40,556 INFO L93 Difference]: Finished difference Result 198 states and 219 transitions. [2020-12-01 16:06:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 16:06:40,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2020-12-01 16:06:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:40,559 INFO L225 Difference]: With dead ends: 198 [2020-12-01 16:06:40,559 INFO L226 Difference]: Without dead ends: 198 [2020-12-01 16:06:40,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=123, Invalid=475, Unknown=2, NotChecked=0, Total=600 [2020-12-01 16:06:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-01 16:06:40,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2020-12-01 16:06:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-01 16:06:40,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-12-01 16:06:40,566 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 34 [2020-12-01 16:06:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:40,567 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-12-01 16:06:40,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-01 16:06:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-12-01 16:06:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 16:06:40,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:40,568 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:40,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:40,781 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:40,781 INFO L82 PathProgramCache]: Analyzing trace with hash 702667948, now seen corresponding path program 1 times [2020-12-01 16:06:40,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:40,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904589234] [2020-12-01 16:06:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-12-01 16:06:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:41,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904589234] [2020-12-01 16:06:41,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102797322] [2020-12-01 16:06:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:06:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 16:06:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:41,320 INFO L382 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 [2020-12-01 16:06:41,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,323 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,324 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:41,343 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,343 INFO L382 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 11 treesize of output 15 [2020-12-01 16:06:41,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 16:06:41,347 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,357 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-12-01 16:06:41,399 INFO L382 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 [2020-12-01 16:06:41,399 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,417 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:06:41,418 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,429 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,430 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:22 [2020-12-01 16:06:41,482 INFO L382 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 [2020-12-01 16:06:41,484 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,494 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,495 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,495 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:12 [2020-12-01 16:06:41,574 INFO L382 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 19 treesize of output 18 [2020-12-01 16:06:41,576 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,584 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,585 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-12-01 16:06:41,644 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-01 16:06:41,644 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:06:41,646 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,654 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,655 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:19 [2020-12-01 16:06:41,680 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-12-01 16:06:41,681 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-12-01 16:06:41,682 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,692 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:41,692 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:19 [2020-12-01 16:06:41,795 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2020-12-01 16:06:41,797 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:41,804 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:41,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:27, output treesize:3 [2020-12-01 16:06:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:41,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 16:06:41,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2020-12-01 16:06:41,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155349018] [2020-12-01 16:06:41,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-01 16:06:41,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:06:41,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-01 16:06:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-12-01 16:06:41,868 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand 23 states. [2020-12-01 16:06:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:43,487 INFO L93 Difference]: Finished difference Result 244 states and 272 transitions. [2020-12-01 16:06:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-01 16:06:43,488 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 34 [2020-12-01 16:06:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:43,489 INFO L225 Difference]: With dead ends: 244 [2020-12-01 16:06:43,490 INFO L226 Difference]: Without dead ends: 244 [2020-12-01 16:06:43,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2020-12-01 16:06:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-12-01 16:06:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 205. [2020-12-01 16:06:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-12-01 16:06:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 237 transitions. [2020-12-01 16:06:43,497 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 237 transitions. Word has length 34 [2020-12-01 16:06:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:43,498 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 237 transitions. [2020-12-01 16:06:43,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-01 16:06:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 237 transitions. [2020-12-01 16:06:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 16:06:43,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:43,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:43,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-01 16:06:43,725 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:43,726 INFO L82 PathProgramCache]: Analyzing trace with hash 307870135, now seen corresponding path program 1 times [2020-12-01 16:06:43,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:06:43,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873709653] [2020-12-01 16:06:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:06:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:43,777 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2020-12-01 16:06:43,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-01 16:06:43,798 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:228) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-01 16:06:43,804 INFO L168 Benchmark]: Toolchain (without parser) took 87667.21 ms. Allocated memory was 88.1 MB in the beginning and 232.8 MB in the end (delta: 144.7 MB). Free memory was 55.3 MB in the beginning and 127.4 MB in the end (delta: -72.1 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:06:43,805 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:06:43,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.10 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 55.2 MB in the beginning and 74.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:06:43,806 INFO L168 Benchmark]: Boogie Preprocessor took 66.08 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 71.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:06:43,806 INFO L168 Benchmark]: RCFGBuilder took 928.34 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 71.4 MB in the end (delta: -86.5 kB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:06:43,807 INFO L168 Benchmark]: TraceAbstraction took 86026.14 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 70.7 MB in the beginning and 127.4 MB in the end (delta: -56.6 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:06:43,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 45.2 MB in the beginning and 45.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.10 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 55.2 MB in the beginning and 74.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.08 ms. Allocated memory is still 109.1 MB. Free memory was 74.6 MB in the beginning and 71.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 928.34 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 71.4 MB in the end (delta: -86.5 kB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 86026.14 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 70.7 MB in the beginning and 127.4 MB in the end (delta: -56.6 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:228) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 16:06:46,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:06:46,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:06:46,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:06:46,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:06:46,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:06:46,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:06:46,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:06:46,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:06:46,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:06:46,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:06:46,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:06:46,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:06:46,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:06:46,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:06:46,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:06:46,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:06:46,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:06:46,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:06:46,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:06:46,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:06:46,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:06:46,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:06:46,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:06:46,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:06:46,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:06:46,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:06:46,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:06:46,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:06:46,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:06:46,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:06:46,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:06:46,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:06:46,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:06:46,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:06:46,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:06:46,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:06:46,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:06:46,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:06:46,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:06:46,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:06:46,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-12-01 16:06:46,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:06:46,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:06:46,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:06:46,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:06:46,894 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:06:46,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:06:46,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:06:46,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 16:06:46,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:06:46,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:06:46,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:06:46,897 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 16:06:46,898 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 16:06:46,898 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 16:06:46,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:06:46,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 16:06:46,899 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 16:06:46,899 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 16:06:46,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:06:46,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:06:46,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:06:46,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:06:46,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:06:46,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:06:46,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:06:46,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:06:46,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:06:46,902 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 16:06:46,902 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 16:06:46,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:06:46,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 16:06:46,923 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 550de44c598358d86c5215062b141ca9f9605e9c [2020-12-01 16:06:47,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:06:47,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:06:47,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:06:47,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:06:47,458 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:06:47,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-circular-1.i [2020-12-01 16:06:47,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/da2925604/1bbec52232b844f2b94e9614245ffeb8/FLAG705646bab [2020-12-01 16:06:48,369 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:06:48,374 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/sv-benchmarks/c/forester-heap/sll-circular-1.i [2020-12-01 16:06:48,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/da2925604/1bbec52232b844f2b94e9614245ffeb8/FLAG705646bab [2020-12-01 16:06:48,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/data/da2925604/1bbec52232b844f2b94e9614245ffeb8 [2020-12-01 16:06:48,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:06:48,584 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 16:06:48,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:06:48,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:06:48,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:06:48,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:48" (1/1) ... [2020-12-01 16:06:48,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb1843f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:48, skipping insertion in model container [2020-12-01 16:06:48,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:06:48" (1/1) ... [2020-12-01 16:06:48,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:06:48,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:06:49,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:06:49,132 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:06:49,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:06:49,324 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:06:49,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49 WrapperNode [2020-12-01 16:06:49,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:06:49,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:06:49,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:06:49,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:06:49,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... [2020-12-01 16:06:49,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:06:49,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:06:49,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:06:49,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:06:49,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:06:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 16:06:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:06:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-12-01 16:06:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-12-01 16:06:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 16:06:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-12-01 16:06:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-12-01 16:06:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-12-01 16:06:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-12-01 16:06:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-12-01 16:06:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-12-01 16:06:49,518 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-12-01 16:06:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-12-01 16:06:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-12-01 16:06:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-12-01 16:06:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-12-01 16:06:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-12-01 16:06:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-12-01 16:06:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-12-01 16:06:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-12-01 16:06:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-12-01 16:06:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-12-01 16:06:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-12-01 16:06:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-12-01 16:06:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-12-01 16:06:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-12-01 16:06:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-12-01 16:06:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-12-01 16:06:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-12-01 16:06:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-12-01 16:06:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-12-01 16:06:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-12-01 16:06:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-12-01 16:06:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-12-01 16:06:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-12-01 16:06:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-12-01 16:06:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-12-01 16:06:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-12-01 16:06:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-12-01 16:06:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-12-01 16:06:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-12-01 16:06:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-12-01 16:06:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-12-01 16:06:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-12-01 16:06:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-12-01 16:06:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-12-01 16:06:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-12-01 16:06:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-12-01 16:06:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-12-01 16:06:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-12-01 16:06:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-12-01 16:06:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-12-01 16:06:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-12-01 16:06:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-12-01 16:06:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-12-01 16:06:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-12-01 16:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-12-01 16:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-12-01 16:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-12-01 16:06:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-12-01 16:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-12-01 16:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-12-01 16:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-12-01 16:06:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-12-01 16:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-12-01 16:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-12-01 16:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-12-01 16:06:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-12-01 16:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-12-01 16:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-12-01 16:06:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-12-01 16:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-12-01 16:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-12-01 16:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-12-01 16:06:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-12-01 16:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-12-01 16:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-12-01 16:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-12-01 16:06:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-12-01 16:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-12-01 16:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-12-01 16:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-12-01 16:06:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-12-01 16:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-12-01 16:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-12-01 16:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-12-01 16:06:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-12-01 16:06:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-12-01 16:06:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-12-01 16:06:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-12-01 16:06:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-12-01 16:06:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-12-01 16:06:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-12-01 16:06:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-12-01 16:06:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-12-01 16:06:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-12-01 16:06:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-12-01 16:06:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-12-01 16:06:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-12-01 16:06:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-12-01 16:06:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-12-01 16:06:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-12-01 16:06:49,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:06:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 16:06:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:06:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:06:49,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 16:06:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:06:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 16:06:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:06:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 16:06:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 16:06:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:06:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-12-01 16:06:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-01 16:06:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-01 16:06:50,707 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:06:50,708 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 16:06:50,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:50 BoogieIcfgContainer [2020-12-01 16:06:50,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:06:50,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:06:50,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:06:50,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:06:50,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:06:48" (1/3) ... [2020-12-01 16:06:50,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdfeff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:06:50, skipping insertion in model container [2020-12-01 16:06:50,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:06:49" (2/3) ... [2020-12-01 16:06:50,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdfeff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:06:50, skipping insertion in model container [2020-12-01 16:06:50,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:50" (3/3) ... [2020-12-01 16:06:50,720 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2020-12-01 16:06:50,737 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:06:50,742 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 44 error locations. [2020-12-01 16:06:50,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2020-12-01 16:06:50,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:06:50,781 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 16:06:50,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:06:50,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:06:50,782 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:06:50,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:06:50,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:06:50,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:06:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2020-12-01 16:06:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:06:50,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:50,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:50,815 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:50,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1521923274, now seen corresponding path program 1 times [2020-12-01 16:06:50,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:50,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126665403] [2020-12-01 16:06:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:51,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 16:06:51,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:51,170 INFO L382 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 [2020-12-01 16:06:51,172 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:51,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:51,181 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:51,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:51,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:51,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126665403] [2020-12-01 16:06:51,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:51,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 16:06:51,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204848986] [2020-12-01 16:06:51,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 16:06:51,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:51,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 16:06:51,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:51,248 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 3 states. [2020-12-01 16:06:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:51,530 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2020-12-01 16:06:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:51,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-01 16:06:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:51,544 INFO L225 Difference]: With dead ends: 110 [2020-12-01 16:06:51,544 INFO L226 Difference]: Without dead ends: 107 [2020-12-01 16:06:51,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 16:06:51,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-01 16:06:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2020-12-01 16:06:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-01 16:06:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-12-01 16:06:51,598 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 7 [2020-12-01 16:06:51,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:51,598 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-12-01 16:06:51,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 16:06:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-12-01 16:06:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 16:06:51,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:51,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:51,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 16:06:51,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:51,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1521923275, now seen corresponding path program 1 times [2020-12-01 16:06:51,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:51,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634722645] [2020-12-01 16:06:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 16:06:52,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:52,060 INFO L382 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 [2020-12-01 16:06:52,061 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:52,070 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:52,072 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:52,072 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 16:06:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:52,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:52,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634722645] [2020-12-01 16:06:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:52,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-12-01 16:06:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131498045] [2020-12-01 16:06:52,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:52,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:52,198 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 4 states. [2020-12-01 16:06:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:52,545 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2020-12-01 16:06:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 16:06:52,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 16:06:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:52,549 INFO L225 Difference]: With dead ends: 105 [2020-12-01 16:06:52,549 INFO L226 Difference]: Without dead ends: 105 [2020-12-01 16:06:52,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-01 16:06:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-12-01 16:06:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-01 16:06:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-12-01 16:06:52,577 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 7 [2020-12-01 16:06:52,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:52,577 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-12-01 16:06:52,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-12-01 16:06:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 16:06:52,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:52,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:52,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 16:06:52,797 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:52,798 INFO L82 PathProgramCache]: Analyzing trace with hash 56530510, now seen corresponding path program 1 times [2020-12-01 16:06:52,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:52,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469183619] [2020-12-01 16:06:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:53,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 16:06:53,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:53,060 INFO L382 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 [2020-12-01 16:06:53,062 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:53,066 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:53,067 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:53,067 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:53,140 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:53,141 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 30 [2020-12-01 16:06:53,157 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:53,184 INFO L625 ElimStorePlain]: treesize reduction 14, result has 48.1 percent of original size [2020-12-01 16:06:53,189 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:53,189 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:13 [2020-12-01 16:06:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:53,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:53,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469183619] [2020-12-01 16:06:53,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:53,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-01 16:06:53,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412076021] [2020-12-01 16:06:53,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:06:53,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:53,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:06:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:06:53,307 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 4 states. [2020-12-01 16:06:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:53,705 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-12-01 16:06:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 16:06:53,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 16:06:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:53,707 INFO L225 Difference]: With dead ends: 91 [2020-12-01 16:06:53,707 INFO L226 Difference]: Without dead ends: 91 [2020-12-01 16:06:53,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 16:06:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-01 16:06:53,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2020-12-01 16:06:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 16:06:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-12-01 16:06:53,723 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 11 [2020-12-01 16:06:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:53,724 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-12-01 16:06:53,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:06:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-12-01 16:06:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 16:06:53,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:53,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:53,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 16:06:53,944 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:53,944 INFO L82 PathProgramCache]: Analyzing trace with hash 56530511, now seen corresponding path program 1 times [2020-12-01 16:06:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:53,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050792808] [2020-12-01 16:06:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:54,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 16:06:54,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:54,232 INFO L382 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 [2020-12-01 16:06:54,233 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:54,242 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:54,243 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:54,244 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 16:06:54,342 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:54,343 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 30 [2020-12-01 16:06:54,349 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:54,383 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-12-01 16:06:54,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:06:54,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:14 [2020-12-01 16:06:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:54,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:54,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050792808] [2020-12-01 16:06:54,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:54,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-12-01 16:06:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388985293] [2020-12-01 16:06:54,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 16:06:54,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 16:06:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 16:06:54,784 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 7 states. [2020-12-01 16:06:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:55,710 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-12-01 16:06:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:06:55,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-01 16:06:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:55,713 INFO L225 Difference]: With dead ends: 97 [2020-12-01 16:06:55,713 INFO L226 Difference]: Without dead ends: 97 [2020-12-01 16:06:55,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:06:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-01 16:06:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2020-12-01 16:06:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 16:06:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-12-01 16:06:55,722 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 11 [2020-12-01 16:06:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:55,722 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-12-01 16:06:55,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 16:06:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-12-01 16:06:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 16:06:55,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:55,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:55,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 16:06:55,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:55,949 INFO L82 PathProgramCache]: Analyzing trace with hash 473266314, now seen corresponding path program 1 times [2020-12-01 16:06:55,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:55,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432978043] [2020-12-01 16:06:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:56,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 16:06:56,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:56,193 INFO L382 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 [2020-12-01 16:06:56,194 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:56,198 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,198 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 16:06:56,214 INFO L382 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 [2020-12-01 16:06:56,214 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:56,225 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,225 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-01 16:06:56,242 INFO L382 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 17 treesize of output 9 [2020-12-01 16:06:56,243 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:56,247 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:56,247 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:7 [2020-12-01 16:06:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:56,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:56,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432978043] [2020-12-01 16:06:56,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:56,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-12-01 16:06:56,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105650159] [2020-12-01 16:06:56,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:06:56,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:56,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:06:56,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:06:56,288 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 6 states. [2020-12-01 16:06:57,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:57,044 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2020-12-01 16:06:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 16:06:57,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 16:06:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:57,046 INFO L225 Difference]: With dead ends: 128 [2020-12-01 16:06:57,046 INFO L226 Difference]: Without dead ends: 128 [2020-12-01 16:06:57,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 16:06:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-01 16:06:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 81. [2020-12-01 16:06:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-01 16:06:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-12-01 16:06:57,056 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-12-01 16:06:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:57,056 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-12-01 16:06:57,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:06:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-12-01 16:06:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 16:06:57,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:57,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:06:57,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 16:06:57,258 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:06:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:06:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash 473266315, now seen corresponding path program 1 times [2020-12-01 16:06:57,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:06:57,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655605399] [2020-12-01 16:06:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-01 16:06:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:06:57,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 16:06:57,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:06:57,508 INFO L382 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 [2020-12-01 16:06:57,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:57,520 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 16:06:57,554 INFO L382 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 [2020-12-01 16:06:57,556 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,568 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:57,574 INFO L382 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 [2020-12-01 16:06:57,575 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:57,586 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,587 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-12-01 16:06:57,629 INFO L382 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 [2020-12-01 16:06:57,631 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,645 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:57,649 INFO L382 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 17 treesize of output 9 [2020-12-01 16:06:57,652 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,666 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:06:57,668 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:06:57,668 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2020-12-01 16:06:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:57,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:06:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:06:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655605399] [2020-12-01 16:06:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:06:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-01 16:06:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071738715] [2020-12-01 16:06:58,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 16:06:58,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:06:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 16:06:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:06:58,021 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 10 states. [2020-12-01 16:06:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:06:59,860 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2020-12-01 16:06:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:06:59,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-01 16:06:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:06:59,863 INFO L225 Difference]: With dead ends: 128 [2020-12-01 16:06:59,863 INFO L226 Difference]: Without dead ends: 128 [2020-12-01 16:06:59,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-01 16:06:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-01 16:06:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 74. [2020-12-01 16:06:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 16:06:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-01 16:06:59,871 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2020-12-01 16:06:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:06:59,871 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-01 16:06:59,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 16:06:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-01 16:06:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:06:59,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:06:59,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:00,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 16:07:00,077 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:07:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:00,078 INFO L82 PathProgramCache]: Analyzing trace with hash -964435240, now seen corresponding path program 1 times [2020-12-01 16:07:00,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:00,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908627827] [2020-12-01 16:07:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:00,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 16:07:00,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:00,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:07:00,300 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,315 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-01 16:07:00,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:00,361 INFO L382 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 27 treesize of output 11 [2020-12-01 16:07:00,363 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,374 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,377 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,378 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-12-01 16:07:00,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:00,436 INFO L382 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 27 treesize of output 11 [2020-12-01 16:07:00,437 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,452 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,453 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-12-01 16:07:00,498 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2020-12-01 16:07:00,499 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,508 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,509 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:00,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:4 [2020-12-01 16:07:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:00,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:00,591 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:00,598 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,599 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:00,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-12-01 16:07:00,684 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:00,688 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:00,689 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:00,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:13 [2020-12-01 16:07:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:00,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908627827] [2020-12-01 16:07:00,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:00,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-12-01 16:07:00,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192140273] [2020-12-01 16:07:00,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 16:07:00,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:00,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 16:07:00,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-01 16:07:00,737 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 10 states. [2020-12-01 16:07:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:01,523 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2020-12-01 16:07:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 16:07:01,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-01 16:07:01,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:01,526 INFO L225 Difference]: With dead ends: 155 [2020-12-01 16:07:01,526 INFO L226 Difference]: Without dead ends: 155 [2020-12-01 16:07:01,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-12-01 16:07:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-01 16:07:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 79. [2020-12-01 16:07:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-01 16:07:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-12-01 16:07:01,534 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 17 [2020-12-01 16:07:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:01,535 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-12-01 16:07:01,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 16:07:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-12-01 16:07:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:07:01,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:01,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:01,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 16:07:01,751 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:07:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:01,751 INFO L82 PathProgramCache]: Analyzing trace with hash -723846791, now seen corresponding path program 1 times [2020-12-01 16:07:01,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:01,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217940183] [2020-12-01 16:07:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:01,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 16:07:01,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:01,958 INFO L382 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 [2020-12-01 16:07:01,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:01,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:01,964 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:01,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-01 16:07:01,978 INFO L382 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 [2020-12-01 16:07:01,980 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:01,988 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:01,994 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:01,994 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2020-12-01 16:07:02,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:02,022 INFO L382 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 [2020-12-01 16:07:02,024 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,034 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:02,035 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,036 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:18 [2020-12-01 16:07:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:02,094 INFO L382 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 [2020-12-01 16:07:02,096 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,107 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:02,108 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:18 [2020-12-01 16:07:02,126 INFO L382 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 [2020-12-01 16:07:02,127 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,135 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:02,136 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:02,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2020-12-01 16:07:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:02,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:02,196 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:02,203 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:02,205 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:02,205 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:21 [2020-12-01 16:07:04,340 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:04,345 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:04,346 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:04,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:14 [2020-12-01 16:07:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:04,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217940183] [2020-12-01 16:07:04,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:04,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-12-01 16:07:04,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935685322] [2020-12-01 16:07:04,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 16:07:04,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:04,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 16:07:04,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2020-12-01 16:07:04,438 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 10 states. [2020-12-01 16:07:07,360 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-01 16:07:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:08,066 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-12-01 16:07:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 16:07:08,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-01 16:07:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:08,069 INFO L225 Difference]: With dead ends: 126 [2020-12-01 16:07:08,069 INFO L226 Difference]: Without dead ends: 126 [2020-12-01 16:07:08,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=85, Invalid=154, Unknown=1, NotChecked=0, Total=240 [2020-12-01 16:07:08,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-01 16:07:08,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 81. [2020-12-01 16:07:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-01 16:07:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-12-01 16:07:08,077 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 16 [2020-12-01 16:07:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:08,077 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-12-01 16:07:08,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 16:07:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-12-01 16:07:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:07:08,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:08,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:08,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 16:07:08,297 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:07:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash -723846790, now seen corresponding path program 1 times [2020-12-01 16:07:08,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:08,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670340125] [2020-12-01 16:07:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:08,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 16:07:08,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:08,536 INFO L382 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 [2020-12-01 16:07:08,536 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,555 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 16:07:08,599 INFO L382 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 [2020-12-01 16:07:08,600 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,631 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,639 INFO L382 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 [2020-12-01 16:07:08,640 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,670 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,670 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-12-01 16:07:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:08,729 INFO L382 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 [2020-12-01 16:07:08,731 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:08,783 INFO L382 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 [2020-12-01 16:07:08,784 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,808 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,809 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,810 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:23 [2020-12-01 16:07:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:08,890 INFO L382 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 [2020-12-01 16:07:08,892 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:08,945 INFO L382 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 [2020-12-01 16:07:08,948 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:08,975 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:08,975 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:23 [2020-12-01 16:07:09,000 INFO L382 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 [2020-12-01 16:07:09,003 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:09,028 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:09,035 INFO L382 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 [2020-12-01 16:07:09,037 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:09,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:09,058 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:09,058 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:9 [2020-12-01 16:07:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:09,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:09,420 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 16:07:09,424 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 16:07:09,425 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-12-01 16:07:09,446 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:09,459 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:09,671 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-01 16:07:09,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:09,684 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:09,699 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:09,785 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:09,786 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-01 16:07:09,786 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:113, output treesize:71 [2020-12-01 16:07:10,220 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-01 16:07:10,287 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 16:07:10,288 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 16:07:10,289 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-12-01 16:07:10,307 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:10,316 INFO L547 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:10,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:10,404 INFO L547 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:10,411 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:10,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:10,433 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2020-12-01 16:07:10,433 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:113, output treesize:51 [2020-12-01 16:07:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:10,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670340125] [2020-12-01 16:07:10,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:10,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-01 16:07:10,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875527800] [2020-12-01 16:07:10,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 16:07:10,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 16:07:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-01 16:07:10,615 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 12 states. [2020-12-01 16:07:11,904 WARN L197 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2020-12-01 16:07:14,809 WARN L197 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-12-01 16:07:17,384 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2020-12-01 16:07:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:18,230 INFO L93 Difference]: Finished difference Result 150 states and 165 transitions. [2020-12-01 16:07:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 16:07:18,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-12-01 16:07:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:18,233 INFO L225 Difference]: With dead ends: 150 [2020-12-01 16:07:18,233 INFO L226 Difference]: Without dead ends: 150 [2020-12-01 16:07:18,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-12-01 16:07:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-01 16:07:18,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 82. [2020-12-01 16:07:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-01 16:07:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-12-01 16:07:18,240 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 16 [2020-12-01 16:07:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:18,241 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-12-01 16:07:18,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 16:07:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-12-01 16:07:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:07:18,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:18,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-01 16:07:18,457 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:07:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:18,457 INFO L82 PathProgramCache]: Analyzing trace with hash 533964504, now seen corresponding path program 1 times [2020-12-01 16:07:18,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:18,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801146248] [2020-12-01 16:07:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:18,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 16:07:18,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:18,661 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-01 16:07:18,662 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:18,672 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:18,673 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:18,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-12-01 16:07:18,690 INFO L382 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 [2020-12-01 16:07:18,691 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:18,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:18,694 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:18,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-12-01 16:07:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:18,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:18,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801146248] [2020-12-01 16:07:18,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:18,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-12-01 16:07:18,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030184470] [2020-12-01 16:07:18,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 16:07:18,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 16:07:18,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 16:07:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 16:07:18,769 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 6 states. [2020-12-01 16:07:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:07:19,335 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2020-12-01 16:07:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 16:07:19,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-01 16:07:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:07:19,337 INFO L225 Difference]: With dead ends: 127 [2020-12-01 16:07:19,337 INFO L226 Difference]: Without dead ends: 127 [2020-12-01 16:07:19,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-01 16:07:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-01 16:07:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 81. [2020-12-01 16:07:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-01 16:07:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-12-01 16:07:19,343 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 20 [2020-12-01 16:07:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:07:19,343 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-12-01 16:07:19,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 16:07:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-12-01 16:07:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:07:19,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:07:19,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:07:19,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-01 16:07:19,559 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-12-01 16:07:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:07:19,559 INFO L82 PathProgramCache]: Analyzing trace with hash 911147924, now seen corresponding path program 1 times [2020-12-01 16:07:19,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 16:07:19,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778370921] [2020-12-01 16:07:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-01 16:07:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:19,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 16:07:19,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:19,790 INFO L382 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 [2020-12-01 16:07:19,791 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,811 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,818 INFO L382 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 [2020-12-01 16:07:19,825 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,845 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,846 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,846 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2020-12-01 16:07:19,883 INFO L382 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 [2020-12-01 16:07:19,884 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,904 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,905 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2020-12-01 16:07:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:19,957 INFO L382 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 [2020-12-01 16:07:19,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,975 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:19,977 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:19,980 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2020-12-01 16:07:20,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-01 16:07:20,039 INFO L382 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 [2020-12-01 16:07:20,041 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:20,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:20,066 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:20,067 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2020-12-01 16:07:20,286 INFO L382 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 14 [2020-12-01 16:07:20,288 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:20,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:20,347 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-01 16:07:20,363 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:20,364 INFO L382 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 19 treesize of output 18 [2020-12-01 16:07:20,366 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:20,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:20,404 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-01 16:07:20,405 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:7 [2020-12-01 16:07:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:07:20,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 16:07:20,952 INFO L547 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:21,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:21,011 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:21,011 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:84 [2020-12-01 16:07:29,375 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 16:07:29,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 16:07:29,444 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-01 16:07:29,444 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:91, output treesize:69 [2020-12-01 16:07:29,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778370921] [2020-12-01 16:07:29,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: incompatible size [2020-12-01 16:07:29,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138628820] [2020-12-01 16:07:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-12-01 16:07:29,477 WARN L195 Executor]: External (cvc4 --incremental --print-success --lang smt --rewrite-divk) stderr output: (error "Error in option parsing: can't understand option `--rewrite-divk'") Please use - [2020-12-01 16:07:29,478 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (cvc4 --incremental --print-success --lang smt --rewrite-divk)Received EOF on stdin. stderr output: (error "Error in option parsing: can't understand option `--rewrite-divk'") Please use - at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.createProcess(Executor.java:108) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.(Executor.java:83) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.(Scriptor.java:72) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildScript(SolverBuilder.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildAndInitializeSolver(SolverBuilder.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 34 more [2020-12-01 16:07:29,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92843676] [2020-12-01 16:07:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f49b8d5a-b30d-470c-8f9f-04e8afed549b/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:07:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:07:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 16:07:29,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 16:07:29,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@4c347b4a [2020-12-01 16:07:29,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:07:29,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 16:07:29,842 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-12-01 16:07:29,842 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 16:07:30,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 mathsat -unsat_core_generation=3 [2020-12-01 16:07:30,291 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 16:07:30,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:07:30 BoogieIcfgContainer [2020-12-01 16:07:30,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:07:30,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:07:30,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:07:30,292 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:07:30,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:06:50" (3/4) ... [2020-12-01 16:07:30,297 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 16:07:30,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:07:30,299 INFO L168 Benchmark]: Toolchain (without parser) took 41714.55 ms. Allocated memory was 81.8 MB in the beginning and 142.6 MB in the end (delta: 60.8 MB). Free memory was 46.7 MB in the beginning and 96.5 MB in the end (delta: -49.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:30,299 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:07:30,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.28 ms. Allocated memory is still 81.8 MB. Free memory was 46.5 MB in the beginning and 53.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:30,300 INFO L168 Benchmark]: Boogie Preprocessor took 90.12 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 50.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:30,301 INFO L168 Benchmark]: RCFGBuilder took 1293.60 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 50.6 MB in the beginning and 85.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:30,301 INFO L168 Benchmark]: TraceAbstraction took 39579.00 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.9 MB in the beginning and 97.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:07:30,302 INFO L168 Benchmark]: Witness Printer took 5.63 ms. Allocated memory is still 142.6 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:07:30,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.28 ms. Allocated memory is still 81.8 MB. Free memory was 46.5 MB in the beginning and 53.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.12 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 50.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1293.60 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 50.6 MB in the beginning and 85.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 39579.00 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 84.9 MB in the beginning and 97.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.63 ms. Allocated memory is still 142.6 MB. Free memory is still 96.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] x->next->data - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 115 locations, 44 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 39.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 17.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 697 SDtfs, 1705 SDslu, 1590 SDs, 0 SdLazy, 1823 SolverSat, 143 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 195 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 382 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 246 ConstructedInterpolants, 10 QuantifiedInterpolants, 21037 SizeOfPredicates, 60 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...