./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 32d9f155778c5c4efaa55d37fdad329bb0d271b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:06:32,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:06:32,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:06:32,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:06:32,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:06:32,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:06:32,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:06:32,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:06:32,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:06:32,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:06:32,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:06:32,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:06:32,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:06:32,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:06:32,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:06:32,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:06:32,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:06:32,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:06:32,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:06:32,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:06:32,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:06:32,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:06:32,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:06:32,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:06:32,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:06:32,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:06:32,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:06:32,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:06:32,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:06:32,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:06:32,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:06:32,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:06:32,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:06:32,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:06:32,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:06:32,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:06:32,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:06:32,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:06:32,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:06:32,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:06:32,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:06:32,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 13:06:32,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:06:32,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:06:32,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:06:32,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:06:32,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:06:32,769 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:06:32,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:06:32,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:06:32,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:06:32,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c335e784-b70b-481d-9586-db7988f00fba/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 -> 32d9f155778c5c4efaa55d37fdad329bb0d271b5 [2019-12-07 13:06:32,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:06:32,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:06:32,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:06:32,888 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:06:32,888 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:06:32,889 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-12-07 13:06:32,934 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/data/e25dcbbaf/2911379bf8df447591e976b049d39a82/FLAG7132541d8 [2019-12-07 13:06:33,408 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:06:33,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2019-12-07 13:06:33,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/data/e25dcbbaf/2911379bf8df447591e976b049d39a82/FLAG7132541d8 [2019-12-07 13:06:33,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/data/e25dcbbaf/2911379bf8df447591e976b049d39a82 [2019-12-07 13:06:33,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:06:33,423 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 13:06:33,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:06:33,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:06:33,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:06:33,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c8495d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33, skipping insertion in model container [2019-12-07 13:06:33,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:06:33,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:06:33,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:06:33,581 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:06:33,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:06:33,608 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:06:33,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33 WrapperNode [2019-12-07 13:06:33,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:06:33,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:06:33,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:06:33,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:06:33,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... [2019-12-07 13:06:33,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:06:33,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:06:33,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:06:33,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:06:33,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 13:06:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:06:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-12-07 13:06:33,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 13:06:33,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:06:33,824 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:06:33,824 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 13:06:33,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:06:33 BoogieIcfgContainer [2019-12-07 13:06:33,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:06:33,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:06:33,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:06:33,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:06:33,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:06:33" (1/3) ... [2019-12-07 13:06:33,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb154ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:06:33, skipping insertion in model container [2019-12-07 13:06:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:33" (2/3) ... [2019-12-07 13:06:33,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb154ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:06:33, skipping insertion in model container [2019-12-07 13:06:33,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:06:33" (3/3) ... [2019-12-07 13:06:33,830 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2019-12-07 13:06:33,836 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:06:33,840 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 13:06:33,848 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 13:06:33,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:06:33,860 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 13:06:33,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:06:33,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:06:33,860 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:06:33,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:06:33,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:06:33,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:06:33,872 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-12-07 13:06:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:06:33,878 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:33,879 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:33,879 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-12-07 13:06:33,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:33,888 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144726082] [2019-12-07 13:06:33,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144726082] [2019-12-07 13:06:34,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:06:34,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:06:34,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712322646] [2019-12-07 13:06:34,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:06:34,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:34,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:06:34,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:06:34,018 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-12-07 13:06:34,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:34,128 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-12-07 13:06:34,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:06:34,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:06:34,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:34,135 INFO L225 Difference]: With dead ends: 58 [2019-12-07 13:06:34,135 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 13:06:34,136 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:06:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 13:06:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-12-07 13:06:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 13:06:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-12-07 13:06:34,164 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-12-07 13:06:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:34,164 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-12-07 13:06:34,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:06:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-12-07 13:06:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:06:34,165 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:34,165 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:34,165 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-12-07 13:06:34,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:34,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086749348] [2019-12-07 13:06:34,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086749348] [2019-12-07 13:06:34,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:06:34,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 13:06:34,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114437736] [2019-12-07 13:06:34,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:06:34,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:34,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:06:34,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:06:34,223 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2019-12-07 13:06:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:34,325 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-12-07 13:06:34,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:06:34,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 13:06:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:34,327 INFO L225 Difference]: With dead ends: 59 [2019-12-07 13:06:34,327 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 13:06:34,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:06:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 13:06:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2019-12-07 13:06:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 13:06:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-12-07 13:06:34,332 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2019-12-07 13:06:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:34,332 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-12-07 13:06:34,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:06:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-07 13:06:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:06:34,333 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:34,333 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:34,333 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:34,333 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-12-07 13:06:34,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:34,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142008224] [2019-12-07 13:06:34,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142008224] [2019-12-07 13:06:34,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:06:34,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:06:34,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495388675] [2019-12-07 13:06:34,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:06:34,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:34,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:06:34,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:06:34,378 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2019-12-07 13:06:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:34,421 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-12-07 13:06:34,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:06:34,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 13:06:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:34,424 INFO L225 Difference]: With dead ends: 43 [2019-12-07 13:06:34,424 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 13:06:34,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:06:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 13:06:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-12-07 13:06:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-12-07 13:06:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-12-07 13:06:34,430 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2019-12-07 13:06:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:34,430 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2019-12-07 13:06:34,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:06:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2019-12-07 13:06:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:06:34,431 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:34,431 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:34,431 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:34,432 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2019-12-07 13:06:34,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:34,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368976954] [2019-12-07 13:06:34,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368976954] [2019-12-07 13:06:34,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:06:34,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:06:34,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628051186] [2019-12-07 13:06:34,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:06:34,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:34,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:06:34,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:06:34,485 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2019-12-07 13:06:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:34,539 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-12-07 13:06:34,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:06:34,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 13:06:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:34,540 INFO L225 Difference]: With dead ends: 47 [2019-12-07 13:06:34,540 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 13:06:34,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:06:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 13:06:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-12-07 13:06:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 13:06:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-12-07 13:06:34,544 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2019-12-07 13:06:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:34,545 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-12-07 13:06:34,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:06:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-07 13:06:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 13:06:34,545 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:34,545 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:34,545 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2019-12-07 13:06:34,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:34,546 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328311524] [2019-12-07 13:06:34,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328311524] [2019-12-07 13:06:34,582 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948875401] [2019-12-07 13:06:34,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:34,612 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:06:34,617 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:34,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:34,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-12-07 13:06:34,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105710421] [2019-12-07 13:06:34,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:06:34,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:34,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:06:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:06:34,638 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2019-12-07 13:06:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:34,708 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2019-12-07 13:06:34,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:06:34,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-12-07 13:06:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:34,710 INFO L225 Difference]: With dead ends: 69 [2019-12-07 13:06:34,710 INFO L226 Difference]: Without dead ends: 69 [2019-12-07 13:06:34,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:06:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-12-07 13:06:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2019-12-07 13:06:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 13:06:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-12-07 13:06:34,715 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2019-12-07 13:06:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:34,715 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-12-07 13:06:34,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:06:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-12-07 13:06:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 13:06:34,716 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:34,716 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:34,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:34,917 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2019-12-07 13:06:34,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:34,920 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86193691] [2019-12-07 13:06:34,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:35,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86193691] [2019-12-07 13:06:35,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978641626] [2019-12-07 13:06:35,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,231 INFO L264 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:06:35,232 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 13:06:35,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:06:35,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2019-12-07 13:06:35,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558679805] [2019-12-07 13:06:35,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:06:35,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:35,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:06:35,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:06:35,237 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 3 states. [2019-12-07 13:06:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:35,254 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-12-07 13:06:35,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:06:35,255 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-07 13:06:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:35,256 INFO L225 Difference]: With dead ends: 62 [2019-12-07 13:06:35,256 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 13:06:35,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:06:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 13:06:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2019-12-07 13:06:35,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 13:06:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-12-07 13:06:35,261 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2019-12-07 13:06:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:35,261 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-12-07 13:06:35,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:06:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-12-07 13:06:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 13:06:35,262 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:35,262 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:35,463 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:35,464 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2019-12-07 13:06:35,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:35,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24627885] [2019-12-07 13:06:35,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:35,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24627885] [2019-12-07 13:06:35,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926460590] [2019-12-07 13:06:35,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:35,586 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:06:35,588 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:35,620 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-12-07 13:06:35,620 INFO L377 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-12-07 13:06:35,621 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:35,624 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:35,624 INFO L534 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. [2019-12-07 13:06:35,625 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-12-07 13:06:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:35,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:35,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-12-07 13:06:35,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153577616] [2019-12-07 13:06:35,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 13:06:35,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 13:06:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:06:35,655 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 8 states. [2019-12-07 13:06:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:35,740 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2019-12-07 13:06:35,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:06:35,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-07 13:06:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:35,741 INFO L225 Difference]: With dead ends: 53 [2019-12-07 13:06:35,741 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 13:06:35,741 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:06:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 13:06:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-12-07 13:06:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 13:06:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-12-07 13:06:35,745 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2019-12-07 13:06:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:35,745 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-12-07 13:06:35,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 13:06:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-12-07 13:06:35,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 13:06:35,746 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:35,746 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:35,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:35,948 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2019-12-07 13:06:35,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:35,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490026456] [2019-12-07 13:06:35,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:36,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490026456] [2019-12-07 13:06:36,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644500313] [2019-12-07 13:06:36,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,205 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 13:06:36,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:36,223 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:36,223 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 13:06:36,224 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:36,239 INFO L614 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-12-07 13:06:36,240 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:06:36,240 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-12-07 13:06:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:36,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:36,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 13:06:36,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005854082] [2019-12-07 13:06:36,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:06:36,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:06:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:06:36,279 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2019-12-07 13:06:36,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:36,390 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-12-07 13:06:36,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:06:36,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-12-07 13:06:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:36,391 INFO L225 Difference]: With dead ends: 55 [2019-12-07 13:06:36,391 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 13:06:36,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:06:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 13:06:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-12-07 13:06:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 13:06:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2019-12-07 13:06:36,395 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2019-12-07 13:06:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:36,395 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2019-12-07 13:06:36,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:06:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2019-12-07 13:06:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 13:06:36,396 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:36,396 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:36,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:36,598 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:36,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2019-12-07 13:06:36,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:36,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585227661] [2019-12-07 13:06:36,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:36,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585227661] [2019-12-07 13:06:36,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285683351] [2019-12-07 13:06:36,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:36,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:06:36,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:06:36,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:06:36,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2019-12-07 13:06:36,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822201607] [2019-12-07 13:06:36,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:06:36,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:06:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:06:36,728 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 6 states. [2019-12-07 13:06:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:36,798 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2019-12-07 13:06:36,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:06:36,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-12-07 13:06:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:36,799 INFO L225 Difference]: With dead ends: 62 [2019-12-07 13:06:36,799 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 13:06:36,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:06:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 13:06:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2019-12-07 13:06:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 13:06:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-12-07 13:06:36,802 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 26 [2019-12-07 13:06:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:36,802 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-12-07 13:06:36,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:06:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-12-07 13:06:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 13:06:36,803 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:36,803 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:37,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:37,005 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:37,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:37,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2019-12-07 13:06:37,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:37,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370362008] [2019-12-07 13:06:37,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:37,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370362008] [2019-12-07 13:06:37,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760707383] [2019-12-07 13:06:37,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 13:06:37,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:06:37,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:37,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-12-07 13:06:37,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162870806] [2019-12-07 13:06:37,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:06:37,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:37,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:06:37,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:06:37,226 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 12 states. [2019-12-07 13:06:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:37,370 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2019-12-07 13:06:37,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 13:06:37,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-12-07 13:06:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:37,371 INFO L225 Difference]: With dead ends: 79 [2019-12-07 13:06:37,371 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 13:06:37,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:06:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 13:06:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2019-12-07 13:06:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-12-07 13:06:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-12-07 13:06:37,375 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2019-12-07 13:06:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:37,375 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-12-07 13:06:37,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:06:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-12-07 13:06:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 13:06:37,376 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:37,376 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:37,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:37,577 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:37,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:37,577 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2019-12-07 13:06:37,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:37,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418414525] [2019-12-07 13:06:37,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:06:37,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418414525] [2019-12-07 13:06:37,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438434360] [2019-12-07 13:06:37,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:37,681 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:06:37,682 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:37,686 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-12-07 13:06:37,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:37,690 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2019-12-07 13:06:37,690 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:37,698 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:37,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:37,704 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-12-07 13:06:37,704 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:37,710 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:37,711 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:06:37,711 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2019-12-07 13:06:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:06:37,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:37,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2019-12-07 13:06:37,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650579418] [2019-12-07 13:06:37,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:06:37,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:37,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:06:37,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:06:37,790 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2019-12-07 13:06:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:37,949 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2019-12-07 13:06:37,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:06:37,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-12-07 13:06:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:37,950 INFO L225 Difference]: With dead ends: 67 [2019-12-07 13:06:37,950 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 13:06:37,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:06:37,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 13:06:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2019-12-07 13:06:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 13:06:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2019-12-07 13:06:37,954 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 31 [2019-12-07 13:06:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:37,954 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2019-12-07 13:06:37,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:06:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2019-12-07 13:06:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 13:06:37,955 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:37,955 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:38,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:38,156 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash 894123677, now seen corresponding path program 1 times [2019-12-07 13:06:38,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:38,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174755251] [2019-12-07 13:06:38,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:06:38,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174755251] [2019-12-07 13:06:38,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128873284] [2019-12-07 13:06:38,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,332 INFO L264 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:06:38,334 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:06:38,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:38,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-12-07 13:06:38,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075533973] [2019-12-07 13:06:38,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:06:38,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:38,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:06:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:06:38,346 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 7 states. [2019-12-07 13:06:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:38,443 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2019-12-07 13:06:38,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:06:38,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-12-07 13:06:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:38,445 INFO L225 Difference]: With dead ends: 93 [2019-12-07 13:06:38,445 INFO L226 Difference]: Without dead ends: 93 [2019-12-07 13:06:38,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:06:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-12-07 13:06:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 72. [2019-12-07 13:06:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 13:06:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-12-07 13:06:38,452 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 37 [2019-12-07 13:06:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:38,453 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2019-12-07 13:06:38,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:06:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2019-12-07 13:06:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-12-07 13:06:38,454 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:38,454 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:38,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:38,656 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2019-12-07 13:06:38,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:38,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751977757] [2019-12-07 13:06:38,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 13:06:38,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751977757] [2019-12-07 13:06:38,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017329507] [2019-12-07 13:06:38,748 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:38,777 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:06:38,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:06:38,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 13:06:38,779 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:06:38,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:38,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-12-07 13:06:38,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826424510] [2019-12-07 13:06:38,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 13:06:38,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:38,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 13:06:38,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:06:38,838 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 16 states. [2019-12-07 13:06:39,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:39,080 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2019-12-07 13:06:39,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 13:06:39,080 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2019-12-07 13:06:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:39,081 INFO L225 Difference]: With dead ends: 117 [2019-12-07 13:06:39,081 INFO L226 Difference]: Without dead ends: 117 [2019-12-07 13:06:39,082 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2019-12-07 13:06:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-12-07 13:06:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2019-12-07 13:06:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-12-07 13:06:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2019-12-07 13:06:39,086 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 43 [2019-12-07 13:06:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:39,086 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2019-12-07 13:06:39,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 13:06:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2019-12-07 13:06:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-12-07 13:06:39,087 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:39,087 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:39,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:39,288 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2073773289, now seen corresponding path program 2 times [2019-12-07 13:06:39,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:39,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468524831] [2019-12-07 13:06:39,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:06:39,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468524831] [2019-12-07 13:06:39,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188182657] [2019-12-07 13:06:39,375 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:39,404 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:06:39,404 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:06:39,405 INFO L264 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:06:39,407 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 13:06:39,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:39,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2019-12-07 13:06:39,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941356200] [2019-12-07 13:06:39,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 13:06:39,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:39,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 13:06:39,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:06:39,442 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand 14 states. [2019-12-07 13:06:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:39,694 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2019-12-07 13:06:39,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 13:06:39,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2019-12-07 13:06:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:39,695 INFO L225 Difference]: With dead ends: 122 [2019-12-07 13:06:39,695 INFO L226 Difference]: Without dead ends: 116 [2019-12-07 13:06:39,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:06:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-12-07 13:06:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 100. [2019-12-07 13:06:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-07 13:06:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2019-12-07 13:06:39,699 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 47 [2019-12-07 13:06:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:39,699 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2019-12-07 13:06:39,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 13:06:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2019-12-07 13:06:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 13:06:39,700 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:39,700 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:39,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:39,901 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:39,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:39,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1381084076, now seen corresponding path program 3 times [2019-12-07 13:06:39,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:39,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811236848] [2019-12-07 13:06:39,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 13:06:40,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811236848] [2019-12-07 13:06:40,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37565829] [2019-12-07 13:06:40,042 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:40,076 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 13:06:40,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:06:40,076 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 13:06:40,078 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:40,081 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_26|]} [2019-12-07 13:06:40,084 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:40,085 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2019-12-07 13:06:40,085 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:40,090 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:40,092 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:40,093 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-12-07 13:06:40,093 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:40,097 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:40,098 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:06:40,098 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-12-07 13:06:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-12-07 13:06:40,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:40,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 17 [2019-12-07 13:06:40,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108428716] [2019-12-07 13:06:40,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 13:06:40,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 13:06:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:06:40,283 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand 18 states. [2019-12-07 13:06:41,035 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2019-12-07 13:06:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:41,667 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2019-12-07 13:06:41,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 13:06:41,668 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2019-12-07 13:06:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:41,673 INFO L225 Difference]: With dead ends: 126 [2019-12-07 13:06:41,674 INFO L226 Difference]: Without dead ends: 126 [2019-12-07 13:06:41,676 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 13:06:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-12-07 13:06:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 119. [2019-12-07 13:06:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-12-07 13:06:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2019-12-07 13:06:41,690 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 52 [2019-12-07 13:06:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:41,691 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2019-12-07 13:06:41,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 13:06:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2019-12-07 13:06:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-12-07 13:06:41,695 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:41,696 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:41,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:41,897 INFO L410 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:41,898 INFO L82 PathProgramCache]: Analyzing trace with hash -185613816, now seen corresponding path program 2 times [2019-12-07 13:06:41,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:41,898 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763020828] [2019-12-07 13:06:41,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-12-07 13:06:42,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763020828] [2019-12-07 13:06:42,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449807519] [2019-12-07 13:06:42,014 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:42,038 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 13:06:42,038 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:06:42,039 INFO L264 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:06:42,041 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:42,043 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_27|]} [2019-12-07 13:06:42,046 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:42,047 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 11 [2019-12-07 13:06:42,047 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:42,052 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:42,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:06:42,055 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-12-07 13:06:42,055 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:42,059 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:42,059 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:06:42,059 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-12-07 13:06:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2019-12-07 13:06:42,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:06:42,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2019-12-07 13:06:42,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922695479] [2019-12-07 13:06:42,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:06:42,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:42,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:06:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:06:42,298 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 6 states. [2019-12-07 13:06:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:42,325 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2019-12-07 13:06:42,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:06:42,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-12-07 13:06:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:42,326 INFO L225 Difference]: With dead ends: 118 [2019-12-07 13:06:42,326 INFO L226 Difference]: Without dead ends: 118 [2019-12-07 13:06:42,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:06:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-12-07 13:06:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2019-12-07 13:06:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-12-07 13:06:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2019-12-07 13:06:42,330 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 126 [2019-12-07 13:06:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:42,330 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2019-12-07 13:06:42,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:06:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2019-12-07 13:06:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-12-07 13:06:42,331 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:42,331 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:42,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:42,532 INFO L410 AbstractCegarLoop]: === Iteration 17 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:42,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1998281440, now seen corresponding path program 1 times [2019-12-07 13:06:42,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:42,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816824418] [2019-12-07 13:06:42,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-12-07 13:06:42,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816824418] [2019-12-07 13:06:42,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8821898] [2019-12-07 13:06:42,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/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 [2019-12-07 13:06:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:42,725 INFO L264 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:06:42,727 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 326 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-12-07 13:06:42,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:06:42,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2019-12-07 13:06:42,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17758875] [2019-12-07 13:06:42,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 13:06:42,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 13:06:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:06:42,807 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand 18 states. [2019-12-07 13:06:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:43,177 INFO L93 Difference]: Finished difference Result 181 states and 190 transitions. [2019-12-07 13:06:43,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 13:06:43,177 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 129 [2019-12-07 13:06:43,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:43,178 INFO L225 Difference]: With dead ends: 181 [2019-12-07 13:06:43,178 INFO L226 Difference]: Without dead ends: 178 [2019-12-07 13:06:43,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2019-12-07 13:06:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-12-07 13:06:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 133. [2019-12-07 13:06:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-12-07 13:06:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2019-12-07 13:06:43,183 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 129 [2019-12-07 13:06:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:43,183 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2019-12-07 13:06:43,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 13:06:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2019-12-07 13:06:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-12-07 13:06:43,185 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:06:43,185 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:06:43,385 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:43,386 INFO L410 AbstractCegarLoop]: === Iteration 18 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 13:06:43,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:06:43,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1503661553, now seen corresponding path program 2 times [2019-12-07 13:06:43,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:06:43,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378056221] [2019-12-07 13:06:43,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:06:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:06:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2019-12-07 13:06:43,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378056221] [2019-12-07 13:06:43,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185191945] [2019-12-07 13:06:43,548 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:43,579 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 13:06:43,579 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:06:43,580 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:06:43,582 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:06:43,613 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,613 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,613 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,617 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,618 INFO L534 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. [2019-12-07 13:06:43,618 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,652 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,652 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,653 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,656 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,656 INFO L534 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. [2019-12-07 13:06:43,656 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,694 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,695 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,695 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,698 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,699 INFO L534 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. [2019-12-07 13:06:43,699 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,741 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,741 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,742 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,748 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,748 INFO L534 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. [2019-12-07 13:06:43,748 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,794 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,794 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,794 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,798 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,798 INFO L534 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. [2019-12-07 13:06:43,799 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,844 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,844 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,845 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,849 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,849 INFO L534 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. [2019-12-07 13:06:43,850 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:43,893 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 13:06:43,893 INFO L377 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 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 13:06:43,894 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:06:43,898 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:06:43,898 INFO L534 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. [2019-12-07 13:06:43,898 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 13:06:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2019-12-07 13:06:44,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 13:06:44,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2019-12-07 13:06:44,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105127918] [2019-12-07 13:06:44,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:06:44,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:06:44,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:06:44,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:06:44,041 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand 6 states. [2019-12-07 13:06:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:06:44,101 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2019-12-07 13:06:44,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:06:44,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2019-12-07 13:06:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:06:44,102 INFO L225 Difference]: With dead ends: 132 [2019-12-07 13:06:44,102 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:06:44,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:06:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:06:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:06:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:06:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:06:44,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 165 [2019-12-07 13:06:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:06:44,103 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:06:44,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:06:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:06:44,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:06:44,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:06:44,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:06:44 BoogieIcfgContainer [2019-12-07 13:06:44,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:06:44,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:06:44,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:06:44,316 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:06:44,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:06:33" (3/4) ... [2019-12-07 13:06:44,324 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:06:44,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-12-07 13:06:44,339 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-12-07 13:06:44,340 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-12-07 13:06:44,350 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-12-07 13:06:44,351 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 13:06:44,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:06:44,352 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:06:44,415 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c335e784-b70b-481d-9586-db7988f00fba/bin/uautomizer/witness.graphml [2019-12-07 13:06:44,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:06:44,416 INFO L168 Benchmark]: Toolchain (without parser) took 10992.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 944.6 MB in the beginning and 946.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 170.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:06:44,416 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:06:44,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:06:44,417 INFO L168 Benchmark]: Boogie Preprocessor took 24.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:06:44,417 INFO L168 Benchmark]: RCFGBuilder took 191.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:06:44,417 INFO L168 Benchmark]: TraceAbstraction took 10488.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 110.4 MB). Peak memory consumption was 188.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:06:44,418 INFO L168 Benchmark]: Witness Printer took 99.62 ms. Allocated memory is still 1.2 GB. Free memory was 955.7 MB in the beginning and 946.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:06:44,419 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -144.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 191.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10488.44 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 955.7 MB in the end (delta: 110.4 MB). Peak memory consumption was 188.5 MB. Max. memory is 11.5 GB. * Witness Printer took 99.62 ms. Allocated memory is still 1.2 GB. Free memory was 955.7 MB in the beginning and 946.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Result: SAFE, OverallTime: 10.4s, OverallIterations: 18, TraceHistogramMax: 15, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 439 SDtfs, 1305 SDslu, 990 SDs, 0 SdLazy, 2875 SolverSat, 314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1058 GetRequests, 807 SyntacticMatches, 38 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 18 MinimizatonAttempts, 200 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1595 NumberOfCodeBlocks, 1306 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1563 ConstructedInterpolants, 312 QuantifiedInterpolants, 931419 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1856 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 3500/3920 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...