./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/java_Nested-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/java_Nested-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e23f623e36810418f8259db464ff0229ef2650c877ad54b7024836b278c00de1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:10:21,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:10:21,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:10:21,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:10:21,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:10:21,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:10:21,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:10:21,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:10:21,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:10:21,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:10:21,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:10:21,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:10:21,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:10:21,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:10:21,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:10:21,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:10:21,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:10:21,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:10:21,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:10:21,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:10:21,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:10:21,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:10:21,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:10:21,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:10:21,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:10:21,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:10:21,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:10:21,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:10:21,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:10:21,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:10:21,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:10:21,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:10:21,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:10:21,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:10:21,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:10:21,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:10:21,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:10:21,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:10:21,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:10:21,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:10:21,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:10:21,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-23 16:10:21,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:10:21,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:10:21,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:10:21,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:10:21,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:10:21,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:10:21,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:10:21,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:10:21,836 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:10:21,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:10:21,837 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:10:21,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:10:21,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:10:21,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:10:21,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:10:21,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:10:21,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:10:21,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:10:21,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 16:10:21,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 16:10:21,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:10:21,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:10:21,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:10:21,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:10:21,842 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 16:10:21,842 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 16:10:21,842 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 16:10:21,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:10:21,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:10:21,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:10:21,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:10:21,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:10:21,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:21,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:10:21,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:10:21,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:10:21,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:10:21,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:10:21,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:10:21,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e23f623e36810418f8259db464ff0229ef2650c877ad54b7024836b278c00de1 [2022-11-23 16:10:22,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:10:22,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:10:22,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:10:22,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:10:22,301 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:10:22,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-memory-alloca/java_Nested-alloca.i [2022-11-23 16:10:25,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:10:26,058 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:10:26,059 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/sv-benchmarks/c/termination-memory-alloca/java_Nested-alloca.i [2022-11-23 16:10:26,070 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/data/4e06bc1be/7f0f0d5fdd644de48ccd856192655b29/FLAGf2acc72d0 [2022-11-23 16:10:26,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/data/4e06bc1be/7f0f0d5fdd644de48ccd856192655b29 [2022-11-23 16:10:26,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:10:26,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:10:26,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:26,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:10:26,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:10:26,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ebef3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26, skipping insertion in model container [2022-11-23 16:10:26,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:10:26,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:10:26,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:26,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:10:26,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:26,602 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:10:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26 WrapperNode [2022-11-23 16:10:26,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:26,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:26,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:10:26,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:10:26,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,663 INFO L138 Inliner]: procedures = 109, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 58 [2022-11-23 16:10:26,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:26,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:10:26,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:10:26,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:10:26,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:10:26,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:10:26,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:10:26,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:10:26,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (1/1) ... [2022-11-23 16:10:26,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:26,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:10:26,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:10:26,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:10:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:10:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:10:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:10:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:10:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:10:26,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:10:26,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:10:27,179 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:10:27,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:10:27,227 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 16:10:27,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:27 BoogieIcfgContainer [2022-11-23 16:10:27,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:10:27,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:10:27,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:10:27,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:10:27,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:26" (1/3) ... [2022-11-23 16:10:27,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501c7183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:27, skipping insertion in model container [2022-11-23 16:10:27,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:26" (2/3) ... [2022-11-23 16:10:27,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501c7183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:27, skipping insertion in model container [2022-11-23 16:10:27,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:27" (3/3) ... [2022-11-23 16:10:27,269 INFO L112 eAbstractionObserver]: Analyzing ICFG java_Nested-alloca.i [2022-11-23 16:10:27,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:10:27,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2022-11-23 16:10:27,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:10:27,395 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76159994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:10:27,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-23 16:10:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 16:10:27,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:27,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 16:10:27,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 3569, now seen corresponding path program 1 times [2022-11-23 16:10:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:27,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381217867] [2022-11-23 16:10:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:27,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:27,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381217867] [2022-11-23 16:10:27,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381217867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:27,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:27,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:10:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454780967] [2022-11-23 16:10:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:27,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:27,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:27,914 INFO L87 Difference]: Start difference. First operand has 48 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:28,015 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-11-23 16:10:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 16:10:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:28,029 INFO L225 Difference]: With dead ends: 44 [2022-11-23 16:10:28,030 INFO L226 Difference]: Without dead ends: 43 [2022-11-23 16:10:28,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:28,036 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:28,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 15 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-23 16:10:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-23 16:10:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-11-23 16:10:28,108 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 2 [2022-11-23 16:10:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:28,108 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-11-23 16:10:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-11-23 16:10:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 16:10:28,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:28,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 16:10:28,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:10:28,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:28,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 3570, now seen corresponding path program 1 times [2022-11-23 16:10:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:28,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143309212] [2022-11-23 16:10:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:28,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:28,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143309212] [2022-11-23 16:10:28,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143309212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:28,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:28,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:10:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837414575] [2022-11-23 16:10:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:28,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:28,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:28,390 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:28,462 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2022-11-23 16:10:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:28,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-23 16:10:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:28,464 INFO L225 Difference]: With dead ends: 39 [2022-11-23 16:10:28,464 INFO L226 Difference]: Without dead ends: 39 [2022-11-23 16:10:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:28,466 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:28,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-23 16:10:28,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-23 16:10:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-11-23 16:10:28,473 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 2 [2022-11-23 16:10:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:28,473 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-11-23 16:10:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-11-23 16:10:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 16:10:28,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:28,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 16:10:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:10:28,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 110615, now seen corresponding path program 1 times [2022-11-23 16:10:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:28,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90329428] [2022-11-23 16:10:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:28,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:28,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90329428] [2022-11-23 16:10:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90329428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:28,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:28,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:10:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233344964] [2022-11-23 16:10:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:28,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:10:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:10:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:28,644 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:28,706 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-11-23 16:10:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:28,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 16:10:28,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:28,708 INFO L225 Difference]: With dead ends: 35 [2022-11-23 16:10:28,708 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:10:28,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:28,710 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:28,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 11 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:10:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 16:10:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 18 states have (on average 2.0) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-11-23 16:10:28,716 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 3 [2022-11-23 16:10:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:28,717 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-11-23 16:10:28,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-11-23 16:10:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 16:10:28,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:28,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 16:10:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:10:28,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 110616, now seen corresponding path program 1 times [2022-11-23 16:10:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:28,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967940087] [2022-11-23 16:10:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:28,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:28,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967940087] [2022-11-23 16:10:28,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967940087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:28,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:28,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:10:28,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904420534] [2022-11-23 16:10:28,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:28,877 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:28,926 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-23 16:10:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:28,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 16:10:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:28,928 INFO L225 Difference]: With dead ends: 31 [2022-11-23 16:10:28,928 INFO L226 Difference]: Without dead ends: 31 [2022-11-23 16:10:28,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:28,930 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:28,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-23 16:10:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-23 16:10:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-23 16:10:28,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 3 [2022-11-23 16:10:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:28,936 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-23 16:10:28,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-23 16:10:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:10:28,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:28,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:10:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:10:28,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -999653480, now seen corresponding path program 1 times [2022-11-23 16:10:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239233355] [2022-11-23 16:10:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:29,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239233355] [2022-11-23 16:10:29,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239233355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:29,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:29,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:10:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962662279] [2022-11-23 16:10:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:10:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:10:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:29,067 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:29,134 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-23 16:10:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:10:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:29,136 INFO L225 Difference]: With dead ends: 25 [2022-11-23 16:10:29,137 INFO L226 Difference]: Without dead ends: 25 [2022-11-23 16:10:29,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:29,139 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-23 16:10:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-23 16:10:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-23 16:10:29,156 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 6 [2022-11-23 16:10:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:29,157 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-23 16:10:29,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-23 16:10:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:10:29,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:29,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:10:29,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:10:29,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash -999653479, now seen corresponding path program 1 times [2022-11-23 16:10:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:29,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221930752] [2022-11-23 16:10:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:29,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:29,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221930752] [2022-11-23 16:10:29,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221930752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:29,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:29,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:10:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058942194] [2022-11-23 16:10:29,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:29,376 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:29,424 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 16:10:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:10:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:29,427 INFO L225 Difference]: With dead ends: 19 [2022-11-23 16:10:29,428 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 16:10:29,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:29,431 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:29,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 16:10:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 16:10:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-23 16:10:29,449 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 6 [2022-11-23 16:10:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:29,450 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-23 16:10:29,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-23 16:10:29,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:10:29,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:29,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:29,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:10:29,454 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:29,454 INFO L85 PathProgramCache]: Analyzing trace with hash -924486795, now seen corresponding path program 1 times [2022-11-23 16:10:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:29,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666609273] [2022-11-23 16:10:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:29,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:29,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666609273] [2022-11-23 16:10:29,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666609273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:29,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:29,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:10:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252236505] [2022-11-23 16:10:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:29,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:10:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:10:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:29,573 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:29,630 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-23 16:10:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:10:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 16:10:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:29,631 INFO L225 Difference]: With dead ends: 22 [2022-11-23 16:10:29,631 INFO L226 Difference]: Without dead ends: 22 [2022-11-23 16:10:29,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:10:29,633 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:29,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:10:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-23 16:10:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-23 16:10:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-23 16:10:29,638 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 7 [2022-11-23 16:10:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:29,638 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-23 16:10:29,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-23 16:10:29,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:10:29,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:29,640 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:10:29,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1579899940, now seen corresponding path program 1 times [2022-11-23 16:10:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:29,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790796756] [2022-11-23 16:10:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:29,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790796756] [2022-11-23 16:10:29,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790796756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:29,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:29,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:10:29,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889079763] [2022-11-23 16:10:29,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:29,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:10:29,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:10:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:10:29,748 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:29,819 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-23 16:10:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:10:29,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:10:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:29,820 INFO L225 Difference]: With dead ends: 25 [2022-11-23 16:10:29,821 INFO L226 Difference]: Without dead ends: 25 [2022-11-23 16:10:29,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:10:29,822 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:29,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:10:29,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-23 16:10:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-11-23 16:10:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-23 16:10:29,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 14 [2022-11-23 16:10:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:29,827 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-23 16:10:29,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:29,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-23 16:10:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 16:10:29,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:29,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:10:29,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1573002842, now seen corresponding path program 1 times [2022-11-23 16:10:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:29,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254300113] [2022-11-23 16:10:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:30,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254300113] [2022-11-23 16:10:30,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254300113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455770496] [2022-11-23 16:10:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:30,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:30,542 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:30,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:10:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:30,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 16:10:30,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:30,764 INFO L350 Elim1Store]: Elim1 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 98 treesize of output 94 [2022-11-23 16:10:30,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:10:30,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-23 16:10:30,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 16:10:30,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-23 16:10:30,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 16:10:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:31,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:31,154 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 Int) (v_ArrVal_161 (Array Int Int))) (or (not (<= (+ v_ArrVal_159 1) |c_ULTIMATE.start_main_#t~mem10#1|)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~j~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~j~0#1.base|) |c_ULTIMATE.start_main_~j~0#1.offset| v_ArrVal_159)) |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_161) |c_ULTIMATE.start_main_~j~0#1.base|) |c_ULTIMATE.start_main_~j~0#1.offset|) 10))) is different from false [2022-11-23 16:10:31,174 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 Int) (v_ArrVal_161 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~j~0#1.base|))) (or (< (select .cse0 |c_ULTIMATE.start_main_~j~0#1.offset|) (+ v_ArrVal_159 1)) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~j~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~j~0#1.offset| v_ArrVal_159)) |c_ULTIMATE.start_main_~c~0#1.base| v_ArrVal_161) |c_ULTIMATE.start_main_~j~0#1.base|) |c_ULTIMATE.start_main_~j~0#1.offset|) 10)))) is different from false [2022-11-23 16:10:31,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:10:31,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-23 16:10:31,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-23 16:10:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-23 16:10:31,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455770496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:31,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1236897686] [2022-11-23 16:10:31,265 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-23 16:10:31,265 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:31,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:31,278 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:31,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-23 16:10:31,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 16:10:31,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 16:10:31,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 16:10:31,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 16:10:31,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 16:10:31,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:10:31,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 16:10:32,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,444 INFO L321 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-23 16:10:32,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 319 [2022-11-23 16:10:32,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,685 INFO L321 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-23 16:10:32,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 313 treesize of output 295 [2022-11-23 16:10:32,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:32,885 INFO L321 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-23 16:10:32,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 313 treesize of output 295 [2022-11-23 16:10:33,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:33,362 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 16:10:33,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-23 16:10:33,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:33,426 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:10:33,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 32 [2022-11-23 16:10:33,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:33,504 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 16:10:33,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-23 16:10:33,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-11-23 16:10:33,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-23 16:10:33,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:33,784 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 16:10:33,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-23 16:10:33,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-11-23 16:10:33,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:33,950 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-23 16:10:33,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2022-11-23 16:10:34,114 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-23 16:10:34,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 34 [2022-11-23 16:10:34,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 16:10:34,341 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 16:10:34,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 32 [2022-11-23 16:10:34,406 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:36,456 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '707#(and (<= 0 |ULTIMATE.start_main_~j~0#1.base|) (<= (+ |ULTIMATE.start_main_~c~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~c~0#1.base|)) (<= 0 |ULTIMATE.start_main_~i~0#1.base|) (= |ULTIMATE.start_main_#res#1| (select (select |#memory_int| |ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset|)) (<= 0 |ULTIMATE.start_main_~i~0#1.offset|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= |ULTIMATE.start_main_~c~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.offset|) (<= 0 |ULTIMATE.start_main_~j~0#1.offset|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~c~0#1.base|) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~i~0#1.offset| 0) (or (= 0 (select |#valid| |ULTIMATE.start_main_~c~0#1.base|)) (and (= (select |#valid| |ULTIMATE.start_main_~c~0#1.base|) 1) (exists ((|v_ULTIMATE.start_main_#t~malloc2#1.base_11| Int)) (and (<= 0 |v_ULTIMATE.start_main_#t~malloc2#1.base_11|) (= (select |#valid| |v_ULTIMATE.start_main_#t~malloc2#1.base_11|) 0))))) (= |#NULL.base| 0))' at error location [2022-11-23 16:10:36,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:36,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:36,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-11-23 16:10:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923414215] [2022-11-23 16:10:36,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:36,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 16:10:36,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:36,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 16:10:36,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=904, Unknown=4, NotChecked=126, Total=1190 [2022-11-23 16:10:36,460 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:36,740 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-11-23 16:10:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:10:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-23 16:10:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:36,742 INFO L225 Difference]: With dead ends: 33 [2022-11-23 16:10:36,742 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 16:10:36,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=209, Invalid=1127, Unknown=4, NotChecked=142, Total=1482 [2022-11-23 16:10:36,743 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:36,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 34 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-11-23 16:10:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 16:10:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-11-23 16:10:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-23 16:10:36,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2022-11-23 16:10:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:36,747 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-23 16:10:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-23 16:10:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 16:10:36,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:36,749 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:36,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:36,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 16:10:36,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2022-11-23 16:10:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1933851352, now seen corresponding path program 2 times [2022-11-23 16:10:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:36,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58100213] [2022-11-23 16:10:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:36,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:37,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58100213] [2022-11-23 16:10:37,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58100213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870951822] [2022-11-23 16:10:37,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:10:37,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:37,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:37,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:10:37,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 16:10:37,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:37,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 16:10:37,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:38,472 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_231 Int) (v_ArrVal_230 Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_12| Int) (|v_ULTIMATE.start_main_#t~malloc2#1.base_12| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_12| Int) (v_ArrVal_228 Int)) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_12| 1))) (and (= |c_#valid| (store (store (store (store (store .cse0 |v_ULTIMATE.start_main_#t~malloc3#1.base_12| v_ArrVal_231) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_230) |v_ULTIMATE.start_main_#t~malloc2#1.base_12| 0) |v_ULTIMATE.start_main_#t~malloc3#1.base_12| 0) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| 0)) (= (select (store .cse0 |v_ULTIMATE.start_main_#t~malloc3#1.base_12| v_ArrVal_228) |v_ULTIMATE.start_main_#t~malloc4#1.base_12|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_12|) 0) (<= 1 v_ArrVal_228) (= (select .cse0 |v_ULTIMATE.start_main_#t~malloc3#1.base_12|) 0)))) is different from true [2022-11-23 16:10:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:10:38,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:10:38,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870951822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:38,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:10:38,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [14] total 16 [2022-11-23 16:10:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845897312] [2022-11-23 16:10:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:10:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:10:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=181, Unknown=1, NotChecked=28, Total=272 [2022-11-23 16:10:38,477 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:38,519 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-23 16:10:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:10:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-23 16:10:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:38,521 INFO L225 Difference]: With dead ends: 30 [2022-11-23 16:10:38,521 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 16:10:38,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=181, Unknown=1, NotChecked=28, Total=272 [2022-11-23 16:10:38,522 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:38,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-11-23 16:10:38,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 16:10:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 16:10:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 16:10:38,524 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-11-23 16:10:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:38,525 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 16:10:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 16:10:38,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 16:10:38,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 29 remaining) [2022-11-23 16:10:38,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2022-11-23 16:10:38,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2022-11-23 16:10:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2022-11-23 16:10:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2022-11-23 16:10:38,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2022-11-23 16:10:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2022-11-23 16:10:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2022-11-23 16:10:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2022-11-23 16:10:38,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2022-11-23 16:10:38,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2022-11-23 16:10:38,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2022-11-23 16:10:38,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2022-11-23 16:10:38,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2022-11-23 16:10:38,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2022-11-23 16:10:38,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2022-11-23 16:10:38,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2022-11-23 16:10:38,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2022-11-23 16:10:38,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2022-11-23 16:10:38,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2022-11-23 16:10:38,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2022-11-23 16:10:38,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2022-11-23 16:10:38,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2022-11-23 16:10:38,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2022-11-23 16:10:38,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2022-11-23 16:10:38,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2022-11-23 16:10:38,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2022-11-23 16:10:38,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2022-11-23 16:10:38,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2022-11-23 16:10:38,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:38,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:10:38,747 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:38,750 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:10:38,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:10:38 BoogieIcfgContainer [2022-11-23 16:10:38,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:10:38,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:10:38,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:10:38,756 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:10:38,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:27" (3/4) ... [2022-11-23 16:10:38,760 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 16:10:38,775 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-23 16:10:38,776 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 16:10:38,776 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 16:10:38,776 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:10:38,827 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:10:38,827 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:10:38,828 INFO L158 Benchmark]: Toolchain (without parser) took 12737.96ms. Allocated memory was 188.7MB in the beginning and 289.4MB in the end (delta: 100.7MB). Free memory was 141.6MB in the beginning and 234.8MB in the end (delta: -93.2MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-11-23 16:10:38,828 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:10:38,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.75ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 126.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 16:10:38,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.53ms. Allocated memory is still 188.7MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:10:38,829 INFO L158 Benchmark]: Boogie Preprocessor took 32.65ms. Allocated memory is still 188.7MB. Free memory was 123.9MB in the beginning and 122.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:10:38,830 INFO L158 Benchmark]: RCFGBuilder took 532.74ms. Allocated memory is still 188.7MB. Free memory was 122.8MB in the beginning and 106.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 16:10:38,831 INFO L158 Benchmark]: TraceAbstraction took 11507.39ms. Allocated memory was 188.7MB in the beginning and 289.4MB in the end (delta: 100.7MB). Free memory was 106.0MB in the beginning and 237.4MB in the end (delta: -131.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:10:38,831 INFO L158 Benchmark]: Witness Printer took 72.06ms. Allocated memory is still 289.4MB. Free memory was 237.4MB in the beginning and 234.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:10:38,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 136.3MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 511.75ms. Allocated memory is still 188.7MB. Free memory was 141.3MB in the beginning and 126.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.53ms. Allocated memory is still 188.7MB. Free memory was 126.0MB in the beginning and 123.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.65ms. Allocated memory is still 188.7MB. Free memory was 123.9MB in the beginning and 122.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 532.74ms. Allocated memory is still 188.7MB. Free memory was 122.8MB in the beginning and 106.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11507.39ms. Allocated memory was 188.7MB in the beginning and 289.4MB in the end (delta: 100.7MB). Free memory was 106.0MB in the beginning and 237.4MB in the end (delta: -131.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.06ms. Allocated memory is still 289.4MB. Free memory was 237.4MB in the beginning and 234.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 11.4s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 255 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 72 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 334 IncrementalHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 92 mSDtfsCounter, 334 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=0, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 147 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 35 QuantifiedInterpolants, 2085 SizeOfPredicates, 11 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 24/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 16:10:38,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae69810c-2cd8-4243-bea0-49dbbe4bf38f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE