./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c --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_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/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_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/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_7b42d9ce-0834-4ce4-9575-c41bc55a739e/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 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0 --- 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 13:39:52,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:39:52,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:39:52,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:39:52,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:39:52,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:39:52,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:39:52,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:39:52,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:39:52,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:39:52,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:39:52,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:39:52,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:39:52,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:39:52,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:39:52,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:39:52,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:39:52,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:39:52,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:39:52,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:39:52,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:39:52,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:39:52,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:39:52,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:39:52,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:39:52,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:39:52,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:39:52,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:39:52,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:39:52,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:39:52,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:39:52,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:39:52,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:39:52,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:39:52,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:39:52,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:39:52,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:39:52,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:39:52,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:39:52,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:39:52,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:39:52,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-23 13:39:52,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:39:52,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:39:52,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:39:52,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:39:52,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:39:52,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:39:52,141 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:39:52,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:39:52,142 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:39:52,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:39:52,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:39:52,143 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:39:52,143 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:39:52,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 13:39:52,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 13:39:52,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:39:52,144 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 13:39:52,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:39:52,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:39:52,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 13:39:52,145 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 13:39:52,145 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 13:39:52,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:39:52,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:39:52,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:39:52,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:39:52,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:39:52,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:39:52,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:39:52,147 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:39:52,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:39:52,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:39:52,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:39:52,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:39:52,148 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_7b42d9ce-0834-4ce4-9575-c41bc55a739e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0 [2022-11-23 13:39:52,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:39:52,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:39:52,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:39:52,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:39:52,501 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:39:52,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2022-11-23 13:39:55,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:39:55,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:39:55,635 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/sv-benchmarks/c/termination-crafted/4BitCounterPointer.c [2022-11-23 13:39:55,640 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/data/45dcdecf2/8e30aeaee2ae4b48868d81bd71b976bb/FLAGd2bee42fd [2022-11-23 13:39:55,653 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/data/45dcdecf2/8e30aeaee2ae4b48868d81bd71b976bb [2022-11-23 13:39:55,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:39:55,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:39:55,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:39:55,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:39:55,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:39:55,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3697b671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55, skipping insertion in model container [2022-11-23 13:39:55,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:39:55,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:39:55,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:39:55,875 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:39:55,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:39:55,898 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:39:55,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55 WrapperNode [2022-11-23 13:39:55,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:39:55,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:39:55,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:39:55,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:39:55,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,925 INFO L138 Inliner]: procedures = 7, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2022-11-23 13:39:55,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:39:55,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:39:55,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:39:55,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:39:55,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:39:55,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:39:55,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:39:55,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:39:55,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (1/1) ... [2022-11-23 13:39:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:39:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:39:55,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:39:55,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:39:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:39:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:39:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:39:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:39:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:39:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:39:56,088 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:39:56,090 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:39:56,307 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:39:56,325 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:39:56,325 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:39:56,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:56 BoogieIcfgContainer [2022-11-23 13:39:56,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:39:56,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:39:56,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:39:56,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:39:56,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:55" (1/3) ... [2022-11-23 13:39:56,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5534d49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:56, skipping insertion in model container [2022-11-23 13:39:56,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:55" (2/3) ... [2022-11-23 13:39:56,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5534d49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:56, skipping insertion in model container [2022-11-23 13:39:56,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:56" (3/3) ... [2022-11-23 13:39:56,339 INFO L112 eAbstractionObserver]: Analyzing ICFG 4BitCounterPointer.c [2022-11-23 13:39:56,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:39:56,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-23 13:39:56,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:39:56,455 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;@6a2da96e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:39:56,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-23 13:39:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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 13:39:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 13:39:56,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:56,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 13:39:56,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:56,497 INFO L85 PathProgramCache]: Analyzing trace with hash 3476, now seen corresponding path program 1 times [2022-11-23 13:39:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:56,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437755324] [2022-11-23 13:39:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:57,084 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 13:39:57,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437755324] [2022-11-23 13:39:57,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437755324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:57,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:57,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512022877] [2022-11-23 13:39:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:57,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:57,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:57,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:57,146 INFO L87 Difference]: Start difference. First operand has 54 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 53 states have internal predecessors, (58), 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 13:39:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:57,236 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2022-11-23 13:39:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:57,239 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 13:39:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:57,263 INFO L225 Difference]: With dead ends: 50 [2022-11-23 13:39:57,264 INFO L226 Difference]: Without dead ends: 49 [2022-11-23 13:39:57,265 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 13:39:57,269 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 20 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:39:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-23 13:39:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-23 13:39:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 48 states have internal predecessors, (52), 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 13:39:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-11-23 13:39:57,316 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 2 [2022-11-23 13:39:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:57,317 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-11-23 13:39:57,317 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 13:39:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-11-23 13:39:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 13:39:57,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:57,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 13:39:57,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:39:57,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash 3477, now seen corresponding path program 1 times [2022-11-23 13:39:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:57,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386739968] [2022-11-23 13:39:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:57,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:57,523 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 13:39:57,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386739968] [2022-11-23 13:39:57,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386739968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:57,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:57,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348460337] [2022-11-23 13:39:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:57,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:57,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:57,528 INFO L87 Difference]: Start difference. First operand 49 states and 52 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 13:39:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:57,610 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-11-23 13:39:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:57,610 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 13:39:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:57,611 INFO L225 Difference]: With dead ends: 45 [2022-11-23 13:39:57,612 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 13:39:57,612 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 13:39:57,614 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:57,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:39:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 13:39:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-23 13:39:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:39:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-11-23 13:39:57,626 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 2 [2022-11-23 13:39:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:57,628 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-11-23 13:39:57,629 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 13:39:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-11-23 13:39:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 13:39:57,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:57,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 13:39:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:39:57,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:57,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash 107732, now seen corresponding path program 1 times [2022-11-23 13:39:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:57,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950021685] [2022-11-23 13:39:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:57,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:57,844 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 13:39:57,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:57,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950021685] [2022-11-23 13:39:57,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950021685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:57,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:57,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:57,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44500472] [2022-11-23 13:39:57,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:57,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:57,850 INFO L87 Difference]: Start difference. First operand 45 states and 48 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 13:39:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:57,923 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-23 13:39:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:57,924 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 13:39:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:57,925 INFO L225 Difference]: With dead ends: 41 [2022-11-23 13:39:57,925 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 13:39:57,926 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 13:39:57,933 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:57,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 16 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:39:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 13:39:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-23 13:39:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 2.0) internal successors, (44), 40 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 13:39:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-23 13:39:57,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 3 [2022-11-23 13:39:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:57,959 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-23 13:39:57,959 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 13:39:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-23 13:39:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 13:39:57,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:57,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 13:39:57,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:39:57,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 107733, now seen corresponding path program 1 times [2022-11-23 13:39:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:57,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851051100] [2022-11-23 13:39:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,136 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 13:39:58,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851051100] [2022-11-23 13:39:58,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851051100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:58,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276294490] [2022-11-23 13:39:58,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:58,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:58,141 INFO L87 Difference]: Start difference. First operand 41 states and 44 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 13:39:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,192 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-23 13:39:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:58,193 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 13:39:58,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,194 INFO L225 Difference]: With dead ends: 37 [2022-11-23 13:39:58,194 INFO L226 Difference]: Without dead ends: 37 [2022-11-23 13:39:58,195 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 13:39:58,198 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-23 13:39:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-23 13:39:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 36 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 13:39:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-11-23 13:39:58,203 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 3 [2022-11-23 13:39:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,203 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-11-23 13:39:58,203 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 13:39:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-11-23 13:39:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:39:58,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:39:58,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:39:58,205 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash 3339671, now seen corresponding path program 1 times [2022-11-23 13:39:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975618053] [2022-11-23 13:39:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,300 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 13:39:58,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975618053] [2022-11-23 13:39:58,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975618053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:58,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626769416] [2022-11-23 13:39:58,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:58,306 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 13:39:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,350 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-23 13:39:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 13:39:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,353 INFO L225 Difference]: With dead ends: 33 [2022-11-23 13:39:58,353 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 13:39:58,354 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 13:39:58,355 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 13:39:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 13:39:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:39:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-23 13:39:58,374 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 4 [2022-11-23 13:39:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,374 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-23 13:39:58,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 13:39:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-23 13:39:58,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 13:39:58,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 13:39:58,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:39:58,379 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 3339672, now seen corresponding path program 1 times [2022-11-23 13:39:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957859643] [2022-11-23 13:39:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,482 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 13:39:58,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957859643] [2022-11-23 13:39:58,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957859643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254777136] [2022-11-23 13:39:58,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:58,485 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 13:39:58,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,518 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-23 13:39:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:58,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-23 13:39:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,519 INFO L225 Difference]: With dead ends: 29 [2022-11-23 13:39:58,519 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 13:39:58,519 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 13:39:58,520 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 13:39:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-23 13:39:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 28 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 13:39:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-23 13:39:58,524 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 4 [2022-11-23 13:39:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,524 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-23 13:39:58,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 13:39:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-23 13:39:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:39:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:39:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:39:58,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash 103529783, now seen corresponding path program 1 times [2022-11-23 13:39:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671146363] [2022-11-23 13:39:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,607 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 13:39:58,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671146363] [2022-11-23 13:39:58,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671146363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752045921] [2022-11-23 13:39:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:58,610 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 13:39:58,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,643 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-23 13:39:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:58,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-23 13:39:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,644 INFO L225 Difference]: With dead ends: 26 [2022-11-23 13:39:58,644 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 13:39:58,645 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 13:39:58,645 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 13:39:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 13:39:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 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 13:39:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-23 13:39:58,649 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2022-11-23 13:39:58,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,650 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-23 13:39:58,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 13:39:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-23 13:39:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 13:39:58,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 13:39:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:39:58,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 103529784, now seen corresponding path program 1 times [2022-11-23 13:39:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871700249] [2022-11-23 13:39:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,712 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 13:39:58,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871700249] [2022-11-23 13:39:58,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871700249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 13:39:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549835960] [2022-11-23 13:39:58,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:58,715 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 13:39:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,741 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-23 13:39:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-23 13:39:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,742 INFO L225 Difference]: With dead ends: 23 [2022-11-23 13:39:58,742 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 13:39:58,743 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 13:39:58,743 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 13:39:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 13:39:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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 13:39:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-23 13:39:58,747 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2022-11-23 13:39:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,747 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-23 13:39:58,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 13:39:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-23 13:39:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 13:39:58,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:39:58,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:39:58,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1661417693, now seen corresponding path program 1 times [2022-11-23 13:39:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883426547] [2022-11-23 13:39:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:58,808 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 13:39:58,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:58,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883426547] [2022-11-23 13:39:58,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883426547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:58,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:58,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:39:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513162746] [2022-11-23 13:39:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:39:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:39:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:39:58,811 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:39:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:58,864 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-23 13:39:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:39:58,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 13:39:58,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:58,865 INFO L225 Difference]: With dead ends: 38 [2022-11-23 13:39:58,865 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 13:39:58,883 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 13:39:58,884 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:39:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 13:39:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-11-23 13:39:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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 13:39:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-23 13:39:58,887 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2022-11-23 13:39:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:58,888 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-23 13:39:58,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 13:39:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-23 13:39:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 13:39:58,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:58,889 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:39:58,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:39:58,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:39:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -723063482, now seen corresponding path program 1 times [2022-11-23 13:39:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:58,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65411363] [2022-11-23 13:39:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:39:59,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65411363] [2022-11-23 13:39:59,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65411363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:39:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356555474] [2022-11-23 13:39:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:59,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:39:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:39:59,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:39:59,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:39:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:59,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-23 13:39:59,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:39:59,409 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 18 treesize of output 16 [2022-11-23 13:39:59,437 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 13:39:59,500 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 13:39:59,514 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 13:39:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:39:59,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:39:59,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:39:59,594 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 13:39:59,598 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 30 treesize of output 22 [2022-11-23 13:39:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:39:59,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356555474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:39:59,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1067784575] [2022-11-23 13:39:59,636 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 13:39:59,637 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:39:59,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:39:59,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:39:59,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:39:59,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:39:59,782 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 13:39:59,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,847 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 13:39:59,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:59,925 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 13:40:00,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 13:40:00,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:00,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:00,927 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:40:08,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1067784575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:40:08,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:40:08,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 5, 5] total 15 [2022-11-23 13:40:08,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181387386] [2022-11-23 13:40:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:40:08,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:40:08,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:40:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:40:08,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=165, Unknown=3, NotChecked=0, Total=240 [2022-11-23 13:40:08,560 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 13:40:10,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:40:10,576 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2022-11-23 13:40:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:40:10,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 13:40:10,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:40:10,579 INFO L225 Difference]: With dead ends: 75 [2022-11-23 13:40:10,579 INFO L226 Difference]: Without dead ends: 75 [2022-11-23 13:40:10,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=100, Invalid=203, Unknown=3, NotChecked=0, Total=306 [2022-11-23 13:40:10,580 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:40:10,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 63 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 13:40:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-23 13:40:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 32. [2022-11-23 13:40:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 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 13:40:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-23 13:40:10,584 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2022-11-23 13:40:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:40:10,585 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-23 13:40:10,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 13:40:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-23 13:40:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 13:40:10,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:40:10,586 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:40:10,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:40:10,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 13:40:10,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:40:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:40:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1385146651, now seen corresponding path program 1 times [2022-11-23 13:40:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:40:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684497930] [2022-11-23 13:40:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:40:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:40:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:40:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:40:11,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:40:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684497930] [2022-11-23 13:40:11,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684497930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:40:11,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818841432] [2022-11-23 13:40:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:40:11,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:40:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:40:11,470 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:40:11,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:40:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:40:11,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 13:40:11,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:40:11,604 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 34 treesize of output 32 [2022-11-23 13:40:11,675 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 13:40:11,795 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:40:11,796 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 2 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 13:40:11,840 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 13:40:11,868 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 13:40:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:40:11,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:40:20,134 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 129 treesize of output 117 [2022-11-23 13:40:20,143 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 90 treesize of output 86 [2022-11-23 13:40:20,148 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 86 treesize of output 78 [2022-11-23 13:40:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:40:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818841432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:40:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399187358] [2022-11-23 13:40:20,259 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-23 13:40:20,259 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:40:20,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:40:20,260 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:40:20,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:40:20,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:40:20,346 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 13:40:20,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,393 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 13:40:20,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,443 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 13:40:20,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 13:40:20,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:20,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:21,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:21,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:21,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:21,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:22,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:22,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:23,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:23,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:40:23,680 INFO L321 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2022-11-23 13:40:23,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:40:23,840 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:40:23,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:40:23,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:40:23,921 INFO L321 Elim1Store]: treesize reduction 68, result has 42.4 percent of original size [2022-11-23 13:40:23,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 275 treesize of output 296 [2022-11-23 13:40:24,087 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:40:30,299 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1071#(and (<= |ULTIMATE.start_main_~x2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x1~0#1.base|) (<= |ULTIMATE.start_main_~x1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x2~0#1.offset|) (<= 0 |ULTIMATE.start_main_~x0~0#1.offset|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= 0 |ULTIMATE.start_main_~x3~0#1.base|) (<= 0 |ULTIMATE.start_main_~x1~0#1.offset|) (<= 0 |ULTIMATE.start_main_~x3~0#1.offset|) (<= |ULTIMATE.start_main_~x3~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x2~0#1.base|) (<= 0 |ULTIMATE.start_main_~x0~0#1.base|) (<= |ULTIMATE.start_main_~x0~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0) (= |#NULL.base| 0) (exists ((|v_ULTIMATE.start_main_#t~malloc0#1.base_7| Int)) (and (= (select |#valid| |v_ULTIMATE.start_main_#t~malloc0#1.base_7|) 0) (<= 0 |v_ULTIMATE.start_main_#t~malloc0#1.base_7|))))' at error location [2022-11-23 13:40:30,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:40:30,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:40:30,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2022-11-23 13:40:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805783594] [2022-11-23 13:40:30,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:40:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 13:40:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:40:30,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 13:40:30,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1170, Unknown=17, NotChecked=0, Total=1406 [2022-11-23 13:40:30,301 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 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 13:40:33,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:35,067 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~x0~0#1.base| |c_ULTIMATE.start_main_~x3~0#1.base|)) (.cse1 (not (= |c_ULTIMATE.start_main_~x3~0#1.base| |c_ULTIMATE.start_main_~x1~0#1.base|)))) (and (or (not .cse0) (= |c_ULTIMATE.start_main_~x0~0#1.offset| |c_ULTIMATE.start_main_~x3~0#1.offset|)) .cse1 (= |c_ULTIMATE.start_main_~x0~0#1.offset| 0) (= |c_ULTIMATE.start_main_~x3~0#1.offset| 0) (or .cse0 (and .cse1 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x3~0#1.base|) |c_ULTIMATE.start_main_~x3~0#1.offset|) 0))) (forall ((v_ArrVal_296 (Array Int Int)) (v_ArrVal_295 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x0~0#1.base| v_ArrVal_295) |c_ULTIMATE.start_main_~x1~0#1.base| v_ArrVal_296) |c_ULTIMATE.start_main_~x3~0#1.base|) |c_ULTIMATE.start_main_~x3~0#1.offset|) 0)))) is different from false [2022-11-23 13:40:37,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:43,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:45,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:47,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:49,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:51,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:53,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:55,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:57,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:40:59,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:01,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:03,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:05,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:07,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:09,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:11,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:13,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:15,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:18,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:20,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-23 13:41:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:20,147 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2022-11-23 13:41:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 13:41:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 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 13:41:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:20,149 INFO L225 Difference]: With dead ends: 96 [2022-11-23 13:41:20,149 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 13:41:20,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=475, Invalid=2266, Unknown=19, NotChecked=102, Total=2862 [2022-11-23 13:41:20,151 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 152 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 64 mSolverCounterUnsat, 96 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 96 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:20,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 143 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 249 Invalid, 96 Unknown, 3 Unchecked, 43.0s Time] [2022-11-23 13:41:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 13:41:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62. [2022-11-23 13:41:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 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 13:41:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-11-23 13:41:20,156 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 22 [2022-11-23 13:41:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:20,156 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-11-23 13:41:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5652173913043477) internal successors, (59), 22 states have internal predecessors, (59), 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 13:41:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-11-23 13:41:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 13:41:20,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:20,158 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:20,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 13:41:20,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 13:41:20,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:41:20,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1435305227, now seen corresponding path program 1 times [2022-11-23 13:41:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:20,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369545844] [2022-11-23 13:41:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:20,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:21,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369545844] [2022-11-23 13:41:21,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369545844] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:41:21,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284215633] [2022-11-23 13:41:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:21,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:21,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:21,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:41:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:41:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:21,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 13:41:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:21,167 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 202 treesize of output 198 [2022-11-23 13:41:21,248 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 13:41:21,358 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 13:41:21,359 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 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-23 13:41:21,538 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 13:41:21,538 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 2 case distinctions, treesize of input 21 treesize of output 25 [2022-11-23 13:41:21,597 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 13:41:21,597 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 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 13:41:21,652 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 13:41:21,676 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 13:41:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:21,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:22,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:41:22,203 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 48 treesize of output 40 [2022-11-23 13:41:22,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:41:22,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 386 treesize of output 382 [2022-11-23 13:41:22,228 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 368 treesize of output 344 [2022-11-23 13:41:22,244 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 368 treesize of output 354 [2022-11-23 13:41:22,344 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 118 treesize of output 114 [2022-11-23 13:41:22,381 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 229 treesize of output 223 [2022-11-23 13:41:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:22,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284215633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [154011671] [2022-11-23 13:41:22,561 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-23 13:41:22,561 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:41:22,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:41:22,562 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:41:22,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:41:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:41:22,623 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 13:41:22,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,658 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 13:41:22,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,697 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 13:41:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 13:41:22,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:23,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:23,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:23,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:23,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:23,959 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:41:33,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [154011671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:33,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:41:33,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 10, 10] total 34 [2022-11-23 13:41:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93515863] [2022-11-23 13:41:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 13:41:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:33,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 13:41:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=887, Unknown=30, NotChecked=0, Total=1190 [2022-11-23 13:41:33,166 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 13:41:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:37,141 INFO L93 Difference]: Finished difference Result 119 states and 144 transitions. [2022-11-23 13:41:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 13:41:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-23 13:41:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:37,143 INFO L225 Difference]: With dead ends: 119 [2022-11-23 13:41:37,143 INFO L226 Difference]: Without dead ends: 119 [2022-11-23 13:41:37,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=382, Invalid=1070, Unknown=30, NotChecked=0, Total=1482 [2022-11-23 13:41:37,144 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:37,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 103 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 13:41:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-23 13:41:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 70. [2022-11-23 13:41:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 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 13:41:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2022-11-23 13:41:37,149 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 25 [2022-11-23 13:41:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:37,150 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2022-11-23 13:41:37,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 13:41:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2022-11-23 13:41:37,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 13:41:37,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:37,151 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:37,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 13:41:37,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:37,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:41:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1769996822, now seen corresponding path program 1 times [2022-11-23 13:41:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:37,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737393982] [2022-11-23 13:41:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:37,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737393982] [2022-11-23 13:41:37,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737393982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:41:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083092387] [2022-11-23 13:41:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:37,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:37,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:41:37,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:41:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:37,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 13:41:37,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:37,861 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 13:41:37,906 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 13:41:37,907 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 13:41:37,913 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 5 treesize of output 3 [2022-11-23 13:41:38,022 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 20 treesize of output 12 [2022-11-23 13:41:38,044 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 13:41:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:41:38,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:38,171 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~x1~0#1.base| Int) (v_ArrVal_454 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |ULTIMATE.start_main_~x1~0#1.base| v_ArrVal_454))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~x0~0#1.base|))) (or (= (select .cse0 |c_ULTIMATE.start_main_~x0~0#1.offset|) 0) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~x0~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~x0~0#1.offset| 0)) |ULTIMATE.start_main_~x1~0#1.base|) |c_ULTIMATE.start_main_~x1~0#1.offset|) 0))))) is different from false [2022-11-23 13:41:38,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 13:41:38,195 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 56 treesize of output 40 [2022-11-23 13:41:38,198 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 87 treesize of output 81 [2022-11-23 13:41:38,202 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 6 treesize of output 4 [2022-11-23 13:41:38,208 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 13:41:38,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-23 13:41:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-11-23 13:41:38,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083092387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [745735299] [2022-11-23 13:41:38,249 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-23 13:41:38,249 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:41:38,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:41:38,249 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:41:38,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:41:38,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:41:38,320 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 13:41:38,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,355 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 13:41:38,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,390 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 13:41:38,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2022-11-23 13:41:38,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:38,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:38,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:38,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:39,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:40,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:40,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:41,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:42,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:42,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:43,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:43,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:44,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:44,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:41:45,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2022-11-23 13:41:45,705 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 13:41:45,726 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 13:41:45,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:41:45,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 13:41:45,800 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-11-23 13:41:45,800 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 33 treesize of output 39 [2022-11-23 13:41:45,901 INFO L321 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2022-11-23 13:41:45,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:41:46,015 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 13:41:46,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:41:52,494 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1866#(and (<= |ULTIMATE.start_main_~x2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x1~0#1.base|) (<= |ULTIMATE.start_main_~x1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x2~0#1.offset|) (<= 0 |ULTIMATE.start_main_~x0~0#1.offset|) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (<= 0 |ULTIMATE.start_main_~x3~0#1.base|) (<= 0 |ULTIMATE.start_main_~x1~0#1.offset|) (<= 0 |ULTIMATE.start_main_~x3~0#1.offset|) (<= |ULTIMATE.start_main_~x3~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~x2~0#1.base|) (<= 0 |ULTIMATE.start_main_~x0~0#1.base|) (<= |ULTIMATE.start_main_~x0~0#1.offset| 0) (= |#NULL.offset| 0) (exists ((|v_ULTIMATE.start_main_#t~malloc1#1.base_8| Int)) (and (<= 0 |v_ULTIMATE.start_main_#t~malloc1#1.base_8|) (= (select |#valid| |v_ULTIMATE.start_main_#t~malloc1#1.base_8|) 0))) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#res#1| 0) (= |#NULL.base| 0))' at error location [2022-11-23 13:41:52,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:41:52,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:41:52,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2022-11-23 13:41:52,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32837611] [2022-11-23 13:41:52,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:41:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 13:41:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 13:41:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=942, Unknown=1, NotChecked=66, Total=1260 [2022-11-23 13:41:52,497 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 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 13:41:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:52,972 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2022-11-23 13:41:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 13:41:52,973 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-23 13:41:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:52,973 INFO L225 Difference]: With dead ends: 104 [2022-11-23 13:41:52,973 INFO L226 Difference]: Without dead ends: 104 [2022-11-23 13:41:52,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=423, Invalid=1472, Unknown=1, NotChecked=84, Total=1980 [2022-11-23 13:41:52,975 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 185 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:52,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 76 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 127 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2022-11-23 13:41:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-23 13:41:52,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2022-11-23 13:41:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 89 states have internal predecessors, (106), 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 13:41:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2022-11-23 13:41:52,980 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 33 [2022-11-23 13:41:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:52,980 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2022-11-23 13:41:52,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 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 13:41:52,980 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2022-11-23 13:41:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 13:41:52,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:52,981 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:52,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:53,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 13:41:53,188 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-23 13:41:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 257505609, now seen corresponding path program 2 times [2022-11-23 13:41:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666759079] [2022-11-23 13:41:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:54,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:41:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666759079] [2022-11-23 13:41:54,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666759079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:41:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579706451] [2022-11-23 13:41:54,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:41:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:54,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:54,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:41:54,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:41:54,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 13:41:54,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:41:54,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-23 13:41:54,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:54,972 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc2#1.base_9| Int) (|v_ULTIMATE.start_main_#t~malloc0#1.base_9| Int) (v_ArrVal_538 Int) (|v_ULTIMATE.start_main_#t~malloc3#1.base_9| Int) (v_ArrVal_537 Int) (|v_ULTIMATE.start_main_#t~malloc1#1.base_9| Int)) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc0#1.base_9| 1))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_#t~malloc1#1.base_9| 1))) (and (= (select (store .cse0 |v_ULTIMATE.start_main_#t~malloc2#1.base_9| 1) |v_ULTIMATE.start_main_#t~malloc3#1.base_9|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc0#1.base_9|) 0) (= (select .cse1 |v_ULTIMATE.start_main_#t~malloc1#1.base_9|) 0) (= (select .cse0 |v_ULTIMATE.start_main_#t~malloc2#1.base_9|) 0) (= |c_#valid| (store (store (store (store (store (store .cse0 |v_ULTIMATE.start_main_#t~malloc2#1.base_9| v_ArrVal_538) |v_ULTIMATE.start_main_#t~malloc3#1.base_9| v_ArrVal_537) |v_ULTIMATE.start_main_#t~malloc0#1.base_9| 0) |v_ULTIMATE.start_main_#t~malloc1#1.base_9| 0) |v_ULTIMATE.start_main_#t~malloc2#1.base_9| 0) |v_ULTIMATE.start_main_#t~malloc3#1.base_9| 0)))))) is different from true [2022-11-23 13:41:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 13:41:54,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:41:54,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579706451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:54,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:41:54,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [14] total 16 [2022-11-23 13:41:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681867936] [2022-11-23 13:41:54,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:41:54,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:54,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:41:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=186, Unknown=1, NotChecked=28, Total=272 [2022-11-23 13:41:54,975 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:41:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:55,017 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2022-11-23 13:41:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:41:55,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 38 [2022-11-23 13:41:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:55,019 INFO L225 Difference]: With dead ends: 89 [2022-11-23 13:41:55,019 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 13:41:55,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=186, Unknown=1, NotChecked=28, Total=272 [2022-11-23 13:41:55,020 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:55,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-23 13:41:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 13:41:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 13:41:55,021 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 13:41:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 13:41:55,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-11-23 13:41:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:55,021 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 13:41:55,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 13:41:55,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 13:41:55,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 13:41:55,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-23 13:41:55,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-23 13:41:55,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-23 13:41:55,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-23 13:41:55,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-23 13:41:55,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-23 13:41:55,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-23 13:41:55,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-23 13:41:55,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-23 13:41:55,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-23 13:41:55,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-23 13:41:55,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-23 13:41:55,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-23 13:41:55,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-23 13:41:55,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-23 13:41:55,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2022-11-23 13:41:55,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:55,233 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:55,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:41:55,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:41:55 BoogieIcfgContainer [2022-11-23 13:41:55,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:41:55,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:41:55,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:41:55,239 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:41:55,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:56" (3/4) ... [2022-11-23 13:41:55,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 13:41:55,252 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-23 13:41:55,252 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 13:41:55,253 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 13:41:55,253 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:41:55,293 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 13:41:55,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:41:55,294 INFO L158 Benchmark]: Toolchain (without parser) took 119636.52ms. Allocated memory was 186.6MB in the beginning and 390.1MB in the end (delta: 203.4MB). Free memory was 151.3MB in the beginning and 216.8MB in the end (delta: -65.5MB). Peak memory consumption was 137.7MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,294 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:41:55,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.80ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 153.0MB in the end (delta: -1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.59ms. Allocated memory is still 186.6MB. Free memory was 153.0MB in the beginning and 151.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,295 INFO L158 Benchmark]: Boogie Preprocessor took 19.52ms. Allocated memory is still 186.6MB. Free memory was 151.6MB in the beginning and 150.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,295 INFO L158 Benchmark]: RCFGBuilder took 382.02ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 133.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,295 INFO L158 Benchmark]: TraceAbstraction took 118907.53ms. Allocated memory was 186.6MB in the beginning and 390.1MB in the end (delta: 203.4MB). Free memory was 132.7MB in the beginning and 218.9MB in the end (delta: -86.2MB). Peak memory consumption was 118.5MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,296 INFO L158 Benchmark]: Witness Printer took 54.31ms. Allocated memory is still 390.1MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:41:55,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.80ms. Allocated memory is still 186.6MB. Free memory was 151.3MB in the beginning and 153.0MB in the end (delta: -1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.59ms. Allocated memory is still 186.6MB. Free memory was 153.0MB in the beginning and 151.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.52ms. Allocated memory is still 186.6MB. Free memory was 151.6MB in the beginning and 150.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.02ms. Allocated memory is still 186.6MB. Free memory was 150.1MB in the beginning and 133.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 118907.53ms. Allocated memory was 186.6MB in the beginning and 390.1MB in the end (delta: 203.4MB). Free memory was 132.7MB in the beginning and 218.9MB in the end (delta: -86.2MB). Peak memory consumption was 118.5MB. Max. memory is 16.1GB. * Witness Printer took 54.31ms. Allocated memory is still 390.1MB. Free memory was 218.9MB in the beginning and 216.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -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: -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: 6]: 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, 54 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 118.8s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 57.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 mSolverCounterUnknown, 764 SdHoareTripleChecker+Valid, 45.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 764 mSDsluCounter, 546 SdHoareTripleChecker+Invalid, 44.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 62 IncrementalHoareTripleChecker+Unchecked, 361 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1009 IncrementalHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 185 mSDtfsCounter, 1009 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 227 SyntacticMatches, 13 SemanticMatches, 174 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2343 ImplicationChecksByTransitivity, 51.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=13, InterpolantAutomatonStates: 91, 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, 14 MinimizatonAttempts, 153 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 301 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 372 ConstructedInterpolants, 69 QuantifiedInterpolants, 6538 SizeOfPredicates, 53 NumberOfNonLiveVariables, 937 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 23 InterpolantComputations, 10 PerfectInterpolantSequences, 97/189 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: OVERALL_TIME: 2.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 28, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 69, TOOLS_POST_TIME: 2.3s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 51, TOOLS_QUANTIFIERELIM_TIME: 2.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 110, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 28, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 1.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 609, DAG_COMPRESSION_RETAINED_NODES: 110, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 13:41:55,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b42d9ce-0834-4ce4-9575-c41bc55a739e/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE