./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0232-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0232-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:56:24,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:56:24,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:56:24,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:56:24,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:56:24,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:56:24,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:56:24,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:56:24,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:56:24,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:56:24,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:56:24,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:56:24,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:56:24,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:56:24,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:56:24,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:56:24,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:56:24,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:56:24,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:56:24,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:56:24,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:56:24,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:56:24,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:56:24,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:56:24,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:56:24,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:56:24,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:56:24,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:56:24,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:56:24,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:56:24,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:56:24,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:56:24,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:56:24,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:56:24,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:56:24,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:56:24,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:56:24,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:56:24,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:56:24,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:56:24,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:56:24,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 18:56:24,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:56:24,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:56:24,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:56:24,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:56:24,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:56:24,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:56:24,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:56:24,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:56:24,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:56:24,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:56:24,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:56:24,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:56:24,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:56:24,520 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_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 [2021-12-06 18:56:24,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:56:24,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:56:24,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:56:24,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:56:24,715 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:56:24,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety/test-0232-3.i [2021-12-06 18:56:24,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/data/e6e94c83c/1a1f3b3dec1b4f0b9c2f041727dfd1a5/FLAG067cc360e [2021-12-06 18:56:25,168 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:56:25,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/sv-benchmarks/c/memsafety/test-0232-3.i [2021-12-06 18:56:25,177 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/data/e6e94c83c/1a1f3b3dec1b4f0b9c2f041727dfd1a5/FLAG067cc360e [2021-12-06 18:56:25,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/data/e6e94c83c/1a1f3b3dec1b4f0b9c2f041727dfd1a5 [2021-12-06 18:56:25,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:56:25,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:56:25,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:56:25,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:56:25,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:56:25,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e11b6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25, skipping insertion in model container [2021-12-06 18:56:25,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:56:25,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:56:25,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:56:25,767 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:56:25,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:56:25,817 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:56:25,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25 WrapperNode [2021-12-06 18:56:25,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:56:25,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:56:25,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:56:25,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:56:25,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,852 INFO L137 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2021-12-06 18:56:25,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:56:25,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:56:25,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:56:25,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:56:25,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:56:25,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:56:25,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:56:25,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:56:25,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (1/1) ... [2021-12-06 18:56:25,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:56:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:56:25,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:56:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:56:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:56:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:56:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:56:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:56:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:56:26,018 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:56:26,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:56:26,233 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:56:26,239 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:56:26,239 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:56:26,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:56:26 BoogieIcfgContainer [2021-12-06 18:56:26,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:56:26,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:56:26,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:56:26,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:56:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:56:25" (1/3) ... [2021-12-06 18:56:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:56:26, skipping insertion in model container [2021-12-06 18:56:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:56:25" (2/3) ... [2021-12-06 18:56:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:56:26, skipping insertion in model container [2021-12-06 18:56:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:56:26" (3/3) ... [2021-12-06 18:56:26,246 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232-3.i [2021-12-06 18:56:26,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:56:26,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-12-06 18:56:26,282 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:56:26,287 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:56:26,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-12-06 18:56:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:56:26,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:26,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:56:26,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2021-12-06 18:56:26,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:26,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230684243] [2021-12-06 18:56:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:26,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:26,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:26,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230684243] [2021-12-06 18:56:26,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230684243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:26,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:26,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:56:26,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575578257] [2021-12-06 18:56:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:26,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:56:26,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:56:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:56:26,488 INFO L87 Difference]: Start difference. First operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-12-06 18:56:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:26,639 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-12-06 18:56:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:56:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2021-12-06 18:56:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:26,651 INFO L225 Difference]: With dead ends: 132 [2021-12-06 18:56:26,651 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 18:56:26,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:26,656 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 185 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:26,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 81 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 18:56:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2021-12-06 18:56:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 2.019607843137255) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2021-12-06 18:56:26,695 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 4 [2021-12-06 18:56:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:26,695 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2021-12-06 18:56:26,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-12-06 18:56:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2021-12-06 18:56:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-06 18:56:26,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:26,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-06 18:56:26,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:56:26,697 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2021-12-06 18:56:26,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:26,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288809485] [2021-12-06 18:56:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:26,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:26,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:26,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288809485] [2021-12-06 18:56:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288809485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:26,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:26,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:56:26,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884633507] [2021-12-06 18:56:26,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:26,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:56:26,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:56:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:56:26,774 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-12-06 18:56:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:26,888 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2021-12-06 18:56:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:56:26,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2021-12-06 18:56:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:26,889 INFO L225 Difference]: With dead ends: 120 [2021-12-06 18:56:26,889 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 18:56:26,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:26,891 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 183 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:26,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 58 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 18:56:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2021-12-06 18:56:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 59 states have (on average 1.8644067796610169) internal successors, (110), 100 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:26,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2021-12-06 18:56:26,899 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 4 [2021-12-06 18:56:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:26,899 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2021-12-06 18:56:26,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-12-06 18:56:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2021-12-06 18:56:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:56:26,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:26,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:56:26,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:56:26,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2021-12-06 18:56:26,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:26,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914361543] [2021-12-06 18:56:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:26,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:26,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:26,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914361543] [2021-12-06 18:56:26,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914361543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:26,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:26,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:56:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279585010] [2021-12-06 18:56:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:26,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:56:26,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:56:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:56:26,928 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-06 18:56:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:26,971 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-12-06 18:56:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:56:26,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-12-06 18:56:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:26,973 INFO L225 Difference]: With dead ends: 116 [2021-12-06 18:56:26,973 INFO L226 Difference]: Without dead ends: 116 [2021-12-06 18:56:26,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:56:26,974 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 62 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:26,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 83 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-06 18:56:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2021-12-06 18:56:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 96 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) [2021-12-06 18:56:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-12-06 18:56:26,980 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 5 [2021-12-06 18:56:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:26,981 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-12-06 18:56:26,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-06 18:56:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-12-06 18:56:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 18:56:26,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:26,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 18:56:26,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:56:26,981 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:26,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:26,982 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2021-12-06 18:56:26,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:26,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717375810] [2021-12-06 18:56:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:26,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717375810] [2021-12-06 18:56:27,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717375810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:56:27,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414367749] [2021-12-06 18:56:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:56:27,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:56:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:56:27,017 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-06 18:56:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,049 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-12-06 18:56:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:56:27,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-12-06 18:56:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,050 INFO L225 Difference]: With dead ends: 94 [2021-12-06 18:56:27,050 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 18:56:27,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:56:27,052 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 54 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 18:56:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-12-06 18:56:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.728813559322034) internal successors, (102), 92 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2021-12-06 18:56:27,059 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 5 [2021-12-06 18:56:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,060 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2021-12-06 18:56:27,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-06 18:56:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2021-12-06 18:56:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 18:56:27,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:56:27,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times [2021-12-06 18:56:27,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369585802] [2021-12-06 18:56:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369585802] [2021-12-06 18:56:27,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369585802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:56:27,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038023357] [2021-12-06 18:56:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 18:56:27,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 18:56:27,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:56:27,145 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,256 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2021-12-06 18:56:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:56:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2021-12-06 18:56:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,257 INFO L225 Difference]: With dead ends: 104 [2021-12-06 18:56:27,257 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 18:56:27,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:56:27,258 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 14 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 424 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 18:56:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2021-12-06 18:56:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 98 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-12-06 18:56:27,263 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2021-12-06 18:56:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,264 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-12-06 18:56:27,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-12-06 18:56:27,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:56:27,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:56:27,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015976, now seen corresponding path program 1 times [2021-12-06 18:56:27,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897017931] [2021-12-06 18:56:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897017931] [2021-12-06 18:56:27,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897017931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:56:27,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128292168] [2021-12-06 18:56:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:56:27,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:56:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:56:27,347 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,439 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2021-12-06 18:56:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:56:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-12-06 18:56:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,440 INFO L225 Difference]: With dead ends: 116 [2021-12-06 18:56:27,440 INFO L226 Difference]: Without dead ends: 116 [2021-12-06 18:56:27,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:56:27,441 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 200 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 122 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-12-06 18:56:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2021-12-06 18:56:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.646153846153846) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2021-12-06 18:56:27,446 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 18 [2021-12-06 18:56:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,446 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2021-12-06 18:56:27,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2021-12-06 18:56:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:56:27,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:56:27,447 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015977, now seen corresponding path program 1 times [2021-12-06 18:56:27,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463459295] [2021-12-06 18:56:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463459295] [2021-12-06 18:56:27,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463459295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:56:27,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666575008] [2021-12-06 18:56:27,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:56:27,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:56:27,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:56:27,541 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,639 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2021-12-06 18:56:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:56:27,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-12-06 18:56:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,640 INFO L225 Difference]: With dead ends: 121 [2021-12-06 18:56:27,641 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 18:56:27,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:56:27,642 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 273 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 119 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 18:56:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2021-12-06 18:56:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 96 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) [2021-12-06 18:56:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-12-06 18:56:27,648 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 18 [2021-12-06 18:56:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,648 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-12-06 18:56:27,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-12-06 18:56:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 18:56:27,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 18:56:27,650 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1257147052, now seen corresponding path program 1 times [2021-12-06 18:56:27,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208249289] [2021-12-06 18:56:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208249289] [2021-12-06 18:56:27,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208249289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:56:27,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191157634] [2021-12-06 18:56:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:56:27,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:56:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:27,707 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,765 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2021-12-06 18:56:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:56:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-06 18:56:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,765 INFO L225 Difference]: With dead ends: 89 [2021-12-06 18:56:27,765 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 18:56:27,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:56:27,766 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 98 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 139 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 18:56:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 18:56:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.631578947368421) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2021-12-06 18:56:27,770 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 20 [2021-12-06 18:56:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,770 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2021-12-06 18:56:27,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2021-12-06 18:56:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 18:56:27,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 18:56:27,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -663319494, now seen corresponding path program 1 times [2021-12-06 18:56:27,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936272452] [2021-12-06 18:56:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:27,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:27,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936272452] [2021-12-06 18:56:27,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936272452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:27,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:27,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:56:27,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394528513] [2021-12-06 18:56:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:27,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:56:27,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:56:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:27,815 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2021-12-06 18:56:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:27,881 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-12-06 18:56:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:56:27,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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 21 [2021-12-06 18:56:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:27,882 INFO L225 Difference]: With dead ends: 88 [2021-12-06 18:56:27,882 INFO L226 Difference]: Without dead ends: 88 [2021-12-06 18:56:27,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:56:27,883 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 16 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:27,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 189 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-06 18:56:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-12-06 18:56:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-12-06 18:56:27,888 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 21 [2021-12-06 18:56:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:27,888 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-12-06 18:56:27,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 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) [2021-12-06 18:56:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-12-06 18:56:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 18:56:27,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:27,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:27,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 18:56:27,890 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:27,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -663319493, now seen corresponding path program 1 times [2021-12-06 18:56:27,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:27,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678471518] [2021-12-06 18:56:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:27,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:28,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:28,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678471518] [2021-12-06 18:56:28,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678471518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:28,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:28,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:56:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892803793] [2021-12-06 18:56:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:56:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:56:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:56:28,002 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 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) [2021-12-06 18:56:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:28,114 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2021-12-06 18:56:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:56:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 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 21 [2021-12-06 18:56:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:28,115 INFO L225 Difference]: With dead ends: 87 [2021-12-06 18:56:28,115 INFO L226 Difference]: Without dead ends: 87 [2021-12-06 18:56:28,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:56:28,116 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 203 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:28,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 152 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-06 18:56:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-12-06 18:56:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-12-06 18:56:28,119 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 21 [2021-12-06 18:56:28,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:28,120 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-12-06 18:56:28,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 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) [2021-12-06 18:56:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-12-06 18:56:28,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:56:28,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:28,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:28,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 18:56:28,121 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash 911932203, now seen corresponding path program 1 times [2021-12-06 18:56:28,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:28,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588714112] [2021-12-06 18:56:28,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:28,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:28,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588714112] [2021-12-06 18:56:28,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588714112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:28,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:28,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:56:28,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944568841] [2021-12-06 18:56:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:28,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:56:28,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:56:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:56:28,252 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:28,600 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2021-12-06 18:56:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:56:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 18:56:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:28,601 INFO L225 Difference]: With dead ends: 169 [2021-12-06 18:56:28,601 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 18:56:28,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:56:28,602 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 358 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:28,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 233 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:56:28,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 18:56:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2021-12-06 18:56:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 100 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) [2021-12-06 18:56:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-06 18:56:28,605 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 22 [2021-12-06 18:56:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:28,605 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-06 18:56:28,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-06 18:56:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:56:28,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:28,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:28,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 18:56:28,606 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash -428723026, now seen corresponding path program 1 times [2021-12-06 18:56:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149522343] [2021-12-06 18:56:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:28,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:28,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149522343] [2021-12-06 18:56:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149522343] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:56:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620914174] [2021-12-06 18:56:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:28,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:56:28,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:56:28,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:56:28,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:56:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 18:56:28,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:56:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:56:28,923 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 18:56:28,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 18:56:28,981 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:56:28,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-06 18:56:29,042 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:56:29,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-06 18:56:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:29,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:56:29,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-12-06 18:56:29,494 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-06 18:56:29,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 72 [2021-12-06 18:56:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:29,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620914174] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:56:29,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:56:29,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2021-12-06 18:56:29,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370496639] [2021-12-06 18:56:29,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:56:29,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:56:29,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:56:29,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:56:29,546 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:29,877 INFO L93 Difference]: Finished difference Result 233 states and 247 transitions. [2021-12-06 18:56:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:56:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 18:56:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:29,879 INFO L225 Difference]: With dead ends: 233 [2021-12-06 18:56:29,879 INFO L226 Difference]: Without dead ends: 233 [2021-12-06 18:56:29,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:56:29,880 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 349 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:29,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 577 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 617 Invalid, 0 Unknown, 225 Unchecked, 0.2s Time] [2021-12-06 18:56:29,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-06 18:56:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 109. [2021-12-06 18:56:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 108 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2021-12-06 18:56:29,883 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 22 [2021-12-06 18:56:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:29,883 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2021-12-06 18:56:29,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2021-12-06 18:56:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:56:29,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:29,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:29,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:56:30,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 18:56:30,085 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash -428723025, now seen corresponding path program 1 times [2021-12-06 18:56:30,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:30,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741288099] [2021-12-06 18:56:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:30,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:30,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:30,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741288099] [2021-12-06 18:56:30,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741288099] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:56:30,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878122895] [2021-12-06 18:56:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:30,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:56:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:56:30,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:56:30,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:56:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:30,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 18:56:30,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:56:30,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:56:30,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:56:30,420 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 18:56:30,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 18:56:30,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 18:56:30,481 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:56:30,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:56:30,489 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:56:30,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-06 18:56:30,556 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:56:30,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-06 18:56:30,560 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:56:30,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 18:56:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:30,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:56:30,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-12-06 18:56:30,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 123 [2021-12-06 18:56:30,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:56:30,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-12-06 18:56:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:30,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878122895] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:56:30,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:56:30,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2021-12-06 18:56:30,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070548666] [2021-12-06 18:56:30,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:56:30,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 18:56:30,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 18:56:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:56:30,879 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:31,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:31,518 INFO L93 Difference]: Finished difference Result 266 states and 281 transitions. [2021-12-06 18:56:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:56:31,518 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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 [2021-12-06 18:56:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:31,520 INFO L225 Difference]: With dead ends: 266 [2021-12-06 18:56:31,520 INFO L226 Difference]: Without dead ends: 266 [2021-12-06 18:56:31,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 18:56:31,521 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 390 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:31,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 902 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 794 Invalid, 0 Unknown, 287 Unchecked, 0.3s Time] [2021-12-06 18:56:31,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-06 18:56:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 109. [2021-12-06 18:56:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 108 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2021-12-06 18:56:31,524 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 22 [2021-12-06 18:56:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:31,524 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2021-12-06 18:56:31,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2021-12-06 18:56:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 18:56:31,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:31,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:31,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:56:31,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 18:56:31,727 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1794872678, now seen corresponding path program 1 times [2021-12-06 18:56:31,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:31,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544766363] [2021-12-06 18:56:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:31,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:31,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:31,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544766363] [2021-12-06 18:56:31,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544766363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:31,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:31,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:56:31,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063810600] [2021-12-06 18:56:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:31,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:56:31,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:56:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:56:31,922 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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) [2021-12-06 18:56:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,252 INFO L93 Difference]: Finished difference Result 166 states and 173 transitions. [2021-12-06 18:56:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:56:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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 23 [2021-12-06 18:56:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,253 INFO L225 Difference]: With dead ends: 166 [2021-12-06 18:56:32,253 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 18:56:32,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:56:32,254 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 286 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 184 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:56:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 18:56:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 110. [2021-12-06 18:56:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 80 states have (on average 1.45) internal successors, (116), 109 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2021-12-06 18:56:32,257 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 23 [2021-12-06 18:56:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,257 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2021-12-06 18:56:32,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 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) [2021-12-06 18:56:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2021-12-06 18:56:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:56:32,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 18:56:32,258 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,258 INFO L85 PathProgramCache]: Analyzing trace with hash 193521933, now seen corresponding path program 1 times [2021-12-06 18:56:32,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492163708] [2021-12-06 18:56:32,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:32,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:32,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492163708] [2021-12-06 18:56:32,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492163708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:32,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:32,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 18:56:32,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837474328] [2021-12-06 18:56:32,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:32,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:56:32,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:56:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:56:32,345 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,598 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2021-12-06 18:56:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:56:32,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 18:56:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,599 INFO L225 Difference]: With dead ends: 117 [2021-12-06 18:56:32,599 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 18:56:32,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:56:32,600 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 204 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 221 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 18:56:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2021-12-06 18:56:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.4444444444444444) internal successors, (117), 110 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2021-12-06 18:56:32,603 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 24 [2021-12-06 18:56:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2021-12-06 18:56:32,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2021-12-06 18:56:32,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:56:32,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 18:56:32,605 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212733, now seen corresponding path program 1 times [2021-12-06 18:56:32,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467723034] [2021-12-06 18:56:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:32,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:32,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467723034] [2021-12-06 18:56:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467723034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:32,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:32,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 18:56:32,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701697264] [2021-12-06 18:56:32,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:32,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 18:56:32,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 18:56:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 18:56:32,672 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,746 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-12-06 18:56:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:56:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 18:56:32,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,747 INFO L225 Difference]: With dead ends: 111 [2021-12-06 18:56:32,747 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 18:56:32,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:56:32,747 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 160 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 56 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:56:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 18:56:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-12-06 18:56:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 109 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2021-12-06 18:56:32,750 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 25 [2021-12-06 18:56:32,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,750 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2021-12-06 18:56:32,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2021-12-06 18:56:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:56:32,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 18:56:32,751 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212734, now seen corresponding path program 1 times [2021-12-06 18:56:32,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462948419] [2021-12-06 18:56:32,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:32,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:32,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462948419] [2021-12-06 18:56:32,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462948419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:32,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:32,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:56:32,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792459688] [2021-12-06 18:56:32,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:32,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:56:32,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:56:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:56:32,780 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,808 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2021-12-06 18:56:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:56:32,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-06 18:56:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,809 INFO L225 Difference]: With dead ends: 103 [2021-12-06 18:56:32,809 INFO L226 Difference]: Without dead ends: 103 [2021-12-06 18:56:32,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:56:32,810 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 48 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-06 18:56:32,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-12-06 18:56:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 102 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2021-12-06 18:56:32,812 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 25 [2021-12-06 18:56:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,812 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2021-12-06 18:56:32,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,812 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2021-12-06 18:56:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 18:56:32,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 18:56:32,813 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1290987217, now seen corresponding path program 1 times [2021-12-06 18:56:32,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824723858] [2021-12-06 18:56:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:32,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:32,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824723858] [2021-12-06 18:56:32,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824723858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:32,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:32,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:56:32,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27057053] [2021-12-06 18:56:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:32,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:56:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:56:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:32,846 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,885 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-12-06 18:56:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:56:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 18:56:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,886 INFO L225 Difference]: With dead ends: 102 [2021-12-06 18:56:32,886 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 18:56:32,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:56:32,887 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 78 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 127 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 18:56:32,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-12-06 18:56:32,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 101 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-12-06 18:56:32,890 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 26 [2021-12-06 18:56:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,890 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-12-06 18:56:32,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,890 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-12-06 18:56:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:56:32,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 18:56:32,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1365898173, now seen corresponding path program 1 times [2021-12-06 18:56:32,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014822582] [2021-12-06 18:56:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:32,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:32,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014822582] [2021-12-06 18:56:32,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014822582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:32,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:32,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:56:32,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607448667] [2021-12-06 18:56:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:32,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:56:32,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:56:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:56:32,931 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:32,992 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-12-06 18:56:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:56:32,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 18:56:32,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:32,992 INFO L225 Difference]: With dead ends: 101 [2021-12-06 18:56:32,992 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 18:56:32,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:56:32,993 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 71 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:32,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 103 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:32,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 18:56:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-12-06 18:56:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.308641975308642) internal successors, (106), 100 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) [2021-12-06 18:56:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2021-12-06 18:56:32,995 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 27 [2021-12-06 18:56:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:32,996 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2021-12-06 18:56:32,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2021-12-06 18:56:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:56:32,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:32,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:32,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 18:56:32,997 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -606829485, now seen corresponding path program 1 times [2021-12-06 18:56:32,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:32,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547417338] [2021-12-06 18:56:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:32,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:33,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547417338] [2021-12-06 18:56:33,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547417338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:33,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:33,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 18:56:33,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958471857] [2021-12-06 18:56:33,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:33,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 18:56:33,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:33,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 18:56:33,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:56:33,187 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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) [2021-12-06 18:56:33,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:33,576 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2021-12-06 18:56:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:56:33,577 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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) Word has length 28 [2021-12-06 18:56:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:33,577 INFO L225 Difference]: With dead ends: 105 [2021-12-06 18:56:33,577 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 18:56:33,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:56:33,578 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 136 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:33,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 287 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:56:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 18:56:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-12-06 18:56:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 104 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 110 transitions. [2021-12-06 18:56:33,581 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 110 transitions. Word has length 28 [2021-12-06 18:56:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:33,581 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 110 transitions. [2021-12-06 18:56:33,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 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) [2021-12-06 18:56:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 110 transitions. [2021-12-06 18:56:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:56:33,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:33,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:33,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 18:56:33,582 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:33,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844736, now seen corresponding path program 1 times [2021-12-06 18:56:33,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:33,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383915802] [2021-12-06 18:56:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:33,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:33,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:33,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383915802] [2021-12-06 18:56:33,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383915802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:33,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:33,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:56:33,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402591873] [2021-12-06 18:56:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:33,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:56:33,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:56:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:56:33,635 INFO L87 Difference]: Start difference. First operand 105 states and 110 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) [2021-12-06 18:56:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:33,714 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-12-06 18:56:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:56:33,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) Word has length 29 [2021-12-06 18:56:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:33,715 INFO L225 Difference]: With dead ends: 104 [2021-12-06 18:56:33,715 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 18:56:33,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:56:33,716 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 128 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:33,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:56:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 18:56:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-06 18:56:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 103 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2021-12-06 18:56:33,719 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 29 [2021-12-06 18:56:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:33,719 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2021-12-06 18:56:33,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) [2021-12-06 18:56:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2021-12-06 18:56:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:56:33,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:33,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:33,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 18:56:33,720 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1014103750, now seen corresponding path program 1 times [2021-12-06 18:56:33,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:33,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795472396] [2021-12-06 18:56:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:33,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:34,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:34,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795472396] [2021-12-06 18:56:34,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795472396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:34,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:34,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 18:56:34,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121043113] [2021-12-06 18:56:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:34,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:56:34,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:56:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:56:34,359 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:35,447 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2021-12-06 18:56:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 18:56:35,447 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:56:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:35,448 INFO L225 Difference]: With dead ends: 153 [2021-12-06 18:56:35,448 INFO L226 Difference]: Without dead ends: 151 [2021-12-06 18:56:35,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 18:56:35,449 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 169 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:35,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 369 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:56:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-12-06 18:56:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 127. [2021-12-06 18:56:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 126 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2021-12-06 18:56:35,452 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 33 [2021-12-06 18:56:35,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:35,452 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2021-12-06 18:56:35,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2021-12-06 18:56:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 18:56:35,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:35,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:35,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 18:56:35,452 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1014104394, now seen corresponding path program 1 times [2021-12-06 18:56:35,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304335986] [2021-12-06 18:56:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:35,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:35,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:35,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304335986] [2021-12-06 18:56:35,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304335986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:56:35,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:56:35,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 18:56:35,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343734585] [2021-12-06 18:56:35,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:56:35,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:56:35,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:56:35,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:56:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:56:35,703 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:56:36,199 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2021-12-06 18:56:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 18:56:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 18:56:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:56:36,200 INFO L225 Difference]: With dead ends: 130 [2021-12-06 18:56:36,200 INFO L226 Difference]: Without dead ends: 113 [2021-12-06 18:56:36,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:56:36,201 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:56:36,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 528 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:56:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-06 18:56:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-12-06 18:56:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 109 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2021-12-06 18:56:36,203 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 33 [2021-12-06 18:56:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:56:36,203 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2021-12-06 18:56:36,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:56:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2021-12-06 18:56:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:56:36,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:56:36,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:56:36,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 18:56:36,204 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:56:36,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:56:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 762441251, now seen corresponding path program 1 times [2021-12-06 18:56:36,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:56:36,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175652562] [2021-12-06 18:56:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:36,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:56:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:56:36,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:56:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175652562] [2021-12-06 18:56:36,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175652562] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:56:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517746430] [2021-12-06 18:56:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:56:36,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:56:36,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:56:36,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:56:36,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:56:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:56:36,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 18:56:36,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:56:36,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:56:36,590 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:56:36,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:56:36,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:56:36,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:56:36,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 18:56:36,783 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 18:56:36,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 18:56:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-06 18:56:36,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-12-06 18:56:36,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-12-06 18:56:37,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:56:37,161 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:56:37,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 52 [2021-12-06 18:56:37,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:56:37,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2021-12-06 18:56:37,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2021-12-06 18:56:37,485 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-06 18:56:37,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 24 [2021-12-06 18:56:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:56:37,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:56:37,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2021-12-06 18:56:49,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 855 treesize of output 839 [2021-12-06 18:56:50,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:56:50,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:56:50,952 INFO L354 Elim1Store]: treesize reduction 75, result has 69.5 percent of original size [2021-12-06 18:56:50,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 159831 treesize of output 147535 [2021-12-06 18:57:02,201 WARN L227 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 579 DAG size of output: 555 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 18:57:02,937 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-06 18:57:02,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 18:57:04,324 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 18:57:04,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:57:04,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 18:57:04,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289475564] [2021-12-06 18:57:04,324 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:04,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:57:04,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:04,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:57:04,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1540, Unknown=1, NotChecked=0, Total=1722 [2021-12-06 18:57:04,325 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:05,283 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2021-12-06 18:57:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 18:57:05,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 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 37 [2021-12-06 18:57:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:05,284 INFO L225 Difference]: With dead ends: 110 [2021-12-06 18:57:05,284 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 18:57:05,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=594, Invalid=3565, Unknown=1, NotChecked=0, Total=4160 [2021-12-06 18:57:05,287 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 210 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:05,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 347 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 18:57:05,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 18:57:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-12-06 18:57:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 91 states have (on average 1.2527472527472527) internal successors, (114), 108 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-12-06 18:57:05,290 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 37 [2021-12-06 18:57:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:05,290 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-12-06 18:57:05,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-12-06 18:57:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:57:05,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:05,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:05,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:57:05,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 18:57:05,492 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:57:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -578213978, now seen corresponding path program 1 times [2021-12-06 18:57:05,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031540894] [2021-12-06 18:57:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:05,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:05,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031540894] [2021-12-06 18:57:05,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031540894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918208415] [2021-12-06 18:57:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:05,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:05,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:05,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:57:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:05,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 18:57:05,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:05,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:05,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:05,835 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 18:57:05,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 18:57:05,874 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:57:05,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-06 18:57:05,913 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:57:05,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-06 18:57:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:05,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:05,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-12-06 18:57:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:07,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918208415] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:07,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:07,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2021-12-06 18:57:07,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283583918] [2021-12-06 18:57:07,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:07,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 18:57:07,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:07,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 18:57:07,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-12-06 18:57:07,090 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:07,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:07,243 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-12-06 18:57:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:57:07,244 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 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 37 [2021-12-06 18:57:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:07,244 INFO L225 Difference]: With dead ends: 108 [2021-12-06 18:57:07,244 INFO L226 Difference]: Without dead ends: 108 [2021-12-06 18:57:07,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:57:07,245 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 120 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:07,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 274 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 81 Unchecked, 0.1s Time] [2021-12-06 18:57:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-06 18:57:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-12-06 18:57:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 107 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2021-12-06 18:57:07,247 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 37 [2021-12-06 18:57:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:07,247 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2021-12-06 18:57:07,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.294117647058823) internal successors, (90), 18 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2021-12-06 18:57:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 18:57:07,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:07,248 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:07,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:57:07,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 18:57:07,449 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:57:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -578213977, now seen corresponding path program 1 times [2021-12-06 18:57:07,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:07,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69390573] [2021-12-06 18:57:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:07,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:07,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69390573] [2021-12-06 18:57:07,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69390573] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804821480] [2021-12-06 18:57:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:07,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:07,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:07,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:07,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:57:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:07,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 18:57:07,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:07,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:07,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:57:07,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:07,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:07,803 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 18:57:07,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2021-12-06 18:57:07,813 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 18:57:07,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 18:57:07,868 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:57:07,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:57:07,876 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:57:07,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-12-06 18:57:07,934 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:57:07,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-06 18:57:07,938 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:57:07,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:57:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:07,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:08,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-12-06 18:57:08,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 123 [2021-12-06 18:57:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:08,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804821480] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:57:08,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:57:08,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2021-12-06 18:57:08,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914297932] [2021-12-06 18:57:08,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:57:08,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:57:08,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:57:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:57:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:57:08,374 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:57:08,616 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-12-06 18:57:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:57:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 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 37 [2021-12-06 18:57:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:57:08,617 INFO L225 Difference]: With dead ends: 107 [2021-12-06 18:57:08,617 INFO L226 Difference]: Without dead ends: 107 [2021-12-06 18:57:08,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-12-06 18:57:08,618 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 183 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:57:08,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 307 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 253 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2021-12-06 18:57:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-06 18:57:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2021-12-06 18:57:08,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2021-12-06 18:57:08,620 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 37 [2021-12-06 18:57:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:57:08,620 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2021-12-06 18:57:08,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.0) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:57:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2021-12-06 18:57:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 18:57:08,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:57:08,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:57:08,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 18:57:08,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 18:57:08,821 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:57:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:57:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2134124894, now seen corresponding path program 1 times [2021-12-06 18:57:08,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:57:08,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962288038] [2021-12-06 18:57:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:08,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:57:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:57:09,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:57:09,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962288038] [2021-12-06 18:57:09,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962288038] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:57:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872685558] [2021-12-06 18:57:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:57:09,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:57:09,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:57:09,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:57:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:57:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:57:09,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-06 18:57:09,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:57:09,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:57:09,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:09,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 18:57:09,488 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 18:57:09,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-06 18:57:09,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,601 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:57:09,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 35 [2021-12-06 18:57:09,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:57:09,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:57:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:57:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:09,952 INFO L354 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2021-12-06 18:57:09,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 56 [2021-12-06 18:57:10,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:57:10,036 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:57:10,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 48 [2021-12-06 18:57:10,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:57:10,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:57:10,263 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-06 18:57:10,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 26 [2021-12-06 18:57:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:57:10,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:57:10,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-12-06 18:58:18,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 132 [2021-12-06 18:58:21,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:21,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:22,364 INFO L354 Elim1Store]: treesize reduction 131, result has 59.8 percent of original size [2021-12-06 18:58:22,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 26 case distinctions, treesize of input 22626 treesize of output 21516 [2021-12-06 18:58:23,347 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:58:23,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 18:58:23,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 18:58:23,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:58:23,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 18:58:23,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714267846] [2021-12-06 18:58:23,758 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:23,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:58:23,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:58:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1502, Unknown=29, NotChecked=0, Total=1722 [2021-12-06 18:58:23,760 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:25,059 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-12-06 18:58:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 18:58:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-06 18:58:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:25,059 INFO L225 Difference]: With dead ends: 98 [2021-12-06 18:58:25,059 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 18:58:25,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 71.1s TimeCoverageRelationStatistics Valid=569, Invalid=3434, Unknown=29, NotChecked=0, Total=4032 [2021-12-06 18:58:25,061 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 145 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:25,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 272 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:58:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 18:58:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-06 18:58:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2021-12-06 18:58:25,063 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 38 [2021-12-06 18:58:25,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:25,063 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2021-12-06 18:58:25,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2021-12-06 18:58:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 18:58:25,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:25,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:25,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:58:25,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:25,265 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:58:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:25,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1733362171, now seen corresponding path program 1 times [2021-12-06 18:58:25,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:25,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296459734] [2021-12-06 18:58:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:25,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:58:25,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296459734] [2021-12-06 18:58:25,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296459734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109945161] [2021-12-06 18:58:25,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:25,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:25,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:25,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:25,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:58:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:25,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 98 conjunts are in the unsatisfiable core [2021-12-06 18:58:25,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:25,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:25,727 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:58:25,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:58:25,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:25,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:58:25,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:58:25,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:25,966 INFO L354 Elim1Store]: treesize reduction 126, result has 29.2 percent of original size [2021-12-06 18:58:25,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 39 treesize of output 69 [2021-12-06 18:58:26,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:58:26,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:26,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:26,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 47 [2021-12-06 18:58:26,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:58:26,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:26,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:26,513 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 18:58:26,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 59 [2021-12-06 18:58:26,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:26,643 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:58:26,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 60 [2021-12-06 18:58:26,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:58:26,878 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 18:58:26,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 39 [2021-12-06 18:58:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:26,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:27,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2021-12-06 18:58:29,026 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|))) (or (and (= (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) 1) .cse1 .cse2) (and (or (not .cse1) (not .cse2)) (forall ((v_arrayElimCell_133 Int)) (= (select |c_#valid| (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|)))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (+ v_arrayElimCell_133 4))) 1))))) is different from false [2021-12-06 18:58:43,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 879 treesize of output 863 [2021-12-06 18:58:47,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:47,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:47,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:47,848 INFO L354 Elim1Store]: treesize reduction 84, result has 67.1 percent of original size [2021-12-06 18:58:47,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 163585 treesize of output 150631 [2021-12-06 18:58:49,074 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 18:58:49,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:58:49,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 18:58:49,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647773855] [2021-12-06 18:58:49,075 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:58:49,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:58:49,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:58:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:58:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1530, Unknown=1, NotChecked=80, Total=1806 [2021-12-06 18:58:49,076 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:58:50,173 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-12-06 18:58:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:58:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-06 18:58:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:58:50,174 INFO L225 Difference]: With dead ends: 98 [2021-12-06 18:58:50,174 INFO L226 Difference]: Without dead ends: 98 [2021-12-06 18:58:50,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=550, Invalid=3235, Unknown=1, NotChecked=120, Total=3906 [2021-12-06 18:58:50,176 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 154 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:58:50,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 365 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:58:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-06 18:58:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-12-06 18:58:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 83 states have (on average 1.216867469879518) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-12-06 18:58:50,178 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 39 [2021-12-06 18:58:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:58:50,178 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-12-06 18:58:50,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.4375) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:58:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-12-06 18:58:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:58:50,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:58:50,178 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:58:50,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:58:50,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 18:58:50,380 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:58:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:58:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1921557173, now seen corresponding path program 1 times [2021-12-06 18:58:50,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:58:50,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372817442] [2021-12-06 18:58:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:50,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:58:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:50,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:58:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372817442] [2021-12-06 18:58:50,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372817442] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:58:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567147612] [2021-12-06 18:58:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:58:50,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:58:50,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:58:50,775 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:58:50,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:58:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:58:50,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 102 conjunts are in the unsatisfiable core [2021-12-06 18:58:50,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:58:50,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:50,888 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:58:50,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:58:50,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:58:50,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:58:51,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:58:51,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:58:51,112 INFO L354 Elim1Store]: treesize reduction 48, result has 34.2 percent of original size [2021-12-06 18:58:51,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 37 [2021-12-06 18:58:51,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:58:51,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:51,231 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:51,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 37 [2021-12-06 18:58:51,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:58:51,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:58:51,513 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 18:58:51,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 47 [2021-12-06 18:58:51,575 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:58:51,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 50 [2021-12-06 18:58:51,855 INFO L354 Elim1Store]: treesize reduction 33, result has 48.4 percent of original size [2021-12-06 18:58:51,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 54 [2021-12-06 18:58:51,917 INFO L354 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2021-12-06 18:58:51,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 64 [2021-12-06 18:58:51,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-12-06 18:58:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:58:51,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:58:52,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:58:52,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2021-12-06 18:58:52,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-12-06 18:58:53,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 422 [2021-12-06 18:58:53,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:53,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:58:53,505 INFO L354 Elim1Store]: treesize reduction 102, result has 59.7 percent of original size [2021-12-06 18:58:53,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 20725 treesize of output 19544 [2021-12-06 18:59:09,153 INFO L354 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2021-12-06 18:59:09,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2021-12-06 18:59:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:09,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567147612] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:09,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:09,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 57 [2021-12-06 18:59:09,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892253529] [2021-12-06 18:59:09,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:09,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 18:59:09,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 18:59:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2021-12-06 18:59:09,223 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 58 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 58 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:15,542 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-12-06 18:59:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 18:59:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 58 states have internal predecessors, (123), 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 43 [2021-12-06 18:59:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:15,543 INFO L225 Difference]: With dead ends: 125 [2021-12-06 18:59:15,543 INFO L226 Difference]: Without dead ends: 125 [2021-12-06 18:59:15,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2805 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2002, Invalid=10654, Unknown=0, NotChecked=0, Total=12656 [2021-12-06 18:59:15,546 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 496 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:15,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 941 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1537 Invalid, 0 Unknown, 256 Unchecked, 1.1s Time] [2021-12-06 18:59:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-06 18:59:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 76. [2021-12-06 18:59:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.253968253968254) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-12-06 18:59:15,548 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 43 [2021-12-06 18:59:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:15,548 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-12-06 18:59:15,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 58 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-12-06 18:59:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 18:59:15,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:15,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:15,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:59:15,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 18:59:15,751 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:15,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -286329880, now seen corresponding path program 1 times [2021-12-06 18:59:15,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:15,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730344752] [2021-12-06 18:59:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:15,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:15,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:15,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730344752] [2021-12-06 18:59:15,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730344752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:15,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993124244] [2021-12-06 18:59:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:15,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:15,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:15,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:59:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:15,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 18:59:15,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:16,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:16,070 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:59:16,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-06 18:59:16,098 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:59:16,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-12-06 18:59:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:16,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:16,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-12-06 18:59:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:16,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993124244] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:16,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:16,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2021-12-06 18:59:16,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584824110] [2021-12-06 18:59:16,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:16,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:59:16,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:16,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:59:16,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:59:16,183 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:16,461 INFO L93 Difference]: Finished difference Result 139 states and 145 transitions. [2021-12-06 18:59:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:59:16,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-06 18:59:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:16,462 INFO L225 Difference]: With dead ends: 139 [2021-12-06 18:59:16,462 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 18:59:16,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:59:16,463 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 108 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:16,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 832 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 377 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2021-12-06 18:59:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 18:59:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 88. [2021-12-06 18:59:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2021-12-06 18:59:16,465 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 45 [2021-12-06 18:59:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:16,466 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2021-12-06 18:59:16,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:16,466 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2021-12-06 18:59:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:59:16,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:16,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:16,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:59:16,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:16,668 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:16,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2114453710, now seen corresponding path program 1 times [2021-12-06 18:59:16,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:16,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297092066] [2021-12-06 18:59:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:16,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:16,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:16,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297092066] [2021-12-06 18:59:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297092066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:16,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529298599] [2021-12-06 18:59:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:16,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:16,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:16,840 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:16,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:59:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:16,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 18:59:16,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:17,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:17,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2021-12-06 18:59:17,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:17,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-12-06 18:59:17,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:17,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2021-12-06 18:59:17,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 18:59:17,511 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 18:59:17,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 27 [2021-12-06 18:59:17,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:17,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2021-12-06 18:59:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:17,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:17,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 18:59:22,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2021-12-06 18:59:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:22,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529298599] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:22,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:22,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 18] total 40 [2021-12-06 18:59:22,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885665483] [2021-12-06 18:59:22,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 18:59:22,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 18:59:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1413, Unknown=3, NotChecked=0, Total=1560 [2021-12-06 18:59:22,959 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 40 states, 40 states have (on average 3.3) internal successors, (132), 40 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:26,749 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-12-06 18:59:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:59:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.3) internal successors, (132), 40 states have internal predecessors, (132), 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 48 [2021-12-06 18:59:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:26,749 INFO L225 Difference]: With dead ends: 102 [2021-12-06 18:59:26,750 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 18:59:26,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=494, Invalid=2807, Unknown=5, NotChecked=0, Total=3306 [2021-12-06 18:59:26,751 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 168 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:26,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 1007 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 717 Invalid, 0 Unknown, 143 Unchecked, 0.3s Time] [2021-12-06 18:59:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 18:59:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-12-06 18:59:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2021-12-06 18:59:26,753 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 48 [2021-12-06 18:59:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:26,753 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2021-12-06 18:59:26,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.3) internal successors, (132), 40 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2021-12-06 18:59:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:59:26,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:26,754 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:26,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 18:59:26,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:26,955 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2114454354, now seen corresponding path program 1 times [2021-12-06 18:59:26,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:26,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532792655] [2021-12-06 18:59:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:26,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:27,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532792655] [2021-12-06 18:59:27,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532792655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275219228] [2021-12-06 18:59:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:27,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:27,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:27,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:27,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:59:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:27,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-06 18:59:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:27,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 18:59:27,812 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:59:27,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:59:27,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 18:59:27,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:27,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-12-06 18:59:28,017 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-06 18:59:28,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 18:59:28,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:28,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:28,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 33 [2021-12-06 18:59:28,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:59:28,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-06 18:59:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:59:28,507 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-06 18:59:28,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 48 [2021-12-06 18:59:28,586 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:59:28,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 51 [2021-12-06 18:59:29,084 INFO L354 Elim1Store]: treesize reduction 41, result has 48.8 percent of original size [2021-12-06 18:59:29,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 62 [2021-12-06 18:59:29,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 65 [2021-12-06 18:59:29,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-06 18:59:29,382 INFO L354 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2021-12-06 18:59:29,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 105 treesize of output 60 [2021-12-06 18:59:29,493 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:59:29,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 31 [2021-12-06 18:59:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:29,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:30,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 51 [2021-12-06 18:59:30,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:30,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1018 treesize of output 1022 [2021-12-06 18:59:41,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1691 treesize of output 1659 [2021-12-06 18:59:44,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:44,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:44,934 INFO L354 Elim1Store]: treesize reduction 68, result has 62.6 percent of original size [2021-12-06 18:59:44,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 24345 treesize of output 22670 [2021-12-06 18:59:46,384 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-06 18:59:46,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 18:59:46,660 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 18:59:46,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:59:46,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-06 18:59:46,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162814345] [2021-12-06 18:59:46,661 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:46,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 18:59:46,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 18:59:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=4540, Unknown=4, NotChecked=0, Total=4830 [2021-12-06 18:59:46,663 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:49,713 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2021-12-06 18:59:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 18:59:49,714 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 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) Word has length 48 [2021-12-06 18:59:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:49,714 INFO L225 Difference]: With dead ends: 181 [2021-12-06 18:59:49,714 INFO L226 Difference]: Without dead ends: 181 [2021-12-06 18:59:49,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=568, Invalid=8548, Unknown=4, NotChecked=0, Total=9120 [2021-12-06 18:59:49,717 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 414 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:49,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 637 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:59:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-06 18:59:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2021-12-06 18:59:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 105 states have (on average 1.180952380952381) internal successors, (124), 117 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2021-12-06 18:59:49,720 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 48 [2021-12-06 18:59:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:49,720 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2021-12-06 18:59:49,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2021-12-06 18:59:49,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:59:49,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:49,721 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:49,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:59:49,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 18:59:49,921 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2114454355, now seen corresponding path program 1 times [2021-12-06 18:59:49,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:49,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025448257] [2021-12-06 18:59:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:49,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:50,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:50,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025448257] [2021-12-06 18:59:50,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025448257] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:50,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847094237] [2021-12-06 18:59:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:50,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:50,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:50,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:50,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:59:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:50,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-06 18:59:50,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:50,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:50,368 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:59:50,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:59:50,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:59:50,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:50,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2021-12-06 18:59:50,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 18:59:50,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 18:59:50,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 44 [2021-12-06 18:59:50,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-12-06 18:59:51,079 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-12-06 18:59:51,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 62 [2021-12-06 18:59:51,085 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:59:51,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2021-12-06 18:59:51,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:59:51,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2021-12-06 18:59:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:51,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:51,504 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1694 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (or (not (= .cse0 0)) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse1 (select (select .cse4 .cse3) .cse0))) (and (<= (+ .cse1 4) (select |c_#length| (select (select .cse2 .cse3) .cse0))) (<= 0 .cse1))))))))) is different from false [2021-12-06 18:59:51,555 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1691 Int) (v_ArrVal_1694 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 0)) (and (forall ((v_ArrVal_1692 Int)) (<= 0 (let ((.cse2 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1692)))) (store .cse1 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse1 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))))) (forall ((v_ArrVal_1692 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse8 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694)) (.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse8 v_ArrVal_1692)))) (store .cse7 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse7 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse5 (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (<= (+ 4 (select (select .cse3 .cse4) .cse5)) (select |c_#length| (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-06 18:59:51,602 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:51,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 236 [2021-12-06 18:59:51,695 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1691 Int) (v_ArrVal_1694 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 0)) (and (forall ((v_ArrVal_1692 Int)) (<= 0 (let ((.cse2 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1692)))) (store .cse1 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse1 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))))) (forall ((v_prenex_4 Int)) (<= (let ((.cse5 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse5 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (select (select .cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse5 v_prenex_4)))) (store .cse4 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse4 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))) (+ |c_ULTIMATE.start_append_#t~mem6#1.offset| 4))) (forall ((v_prenex_4 Int)) (= |c_ULTIMATE.start_append_#t~mem6#1.base| (let ((.cse8 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (select (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse8 v_prenex_4)))) (store .cse7 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse7 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse8 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))))))) is different from false [2021-12-06 18:59:51,771 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1691 Int) (v_ArrVal_1694 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 0)) (and (forall ((v_ArrVal_1692 Int)) (<= 0 (let ((.cse2 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse2 v_ArrVal_1692)))) (store .cse1 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse1 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))))) (forall ((v_prenex_4 Int)) (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|))) (= (select .cse3 |c_ULTIMATE.start_append_~item~0#1.offset|) (let ((.cse6 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (select (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store .cse3 .cse6 v_prenex_4)))) (store .cse5 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse5 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse6 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))))) (forall ((v_prenex_4 Int)) (let ((.cse10 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) (<= (let ((.cse9 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store .cse10 .cse9 v_ArrVal_1691)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1694))) (select (select .cse7 (select (select (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse9 v_prenex_4)))) (store .cse8 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse8 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))) |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (select (select .cse7 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)))) (+ (select .cse10 |c_ULTIMATE.start_append_~item~0#1.offset|) 4))))))) is different from false [2021-12-06 18:59:52,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:52,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 50998 treesize of output 47031 [2021-12-06 18:59:54,849 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 18:59:54,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:59:54,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-06 18:59:54,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245791072] [2021-12-06 18:59:54,850 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:54,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 18:59:54,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 18:59:54,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1329, Unknown=4, NotChecked=308, Total=1806 [2021-12-06 18:59:54,851 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:55,742 INFO L93 Difference]: Finished difference Result 193 states and 200 transitions. [2021-12-06 18:59:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 18:59:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 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) Word has length 48 [2021-12-06 18:59:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:55,743 INFO L225 Difference]: With dead ends: 193 [2021-12-06 18:59:55,743 INFO L226 Difference]: Without dead ends: 193 [2021-12-06 18:59:55,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=428, Invalid=3006, Unknown=4, NotChecked=468, Total=3906 [2021-12-06 18:59:55,744 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 510 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:55,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 362 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:59:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-06 18:59:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 137. [2021-12-06 18:59:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 124 states have (on average 1.153225806451613) internal successors, (143), 136 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2021-12-06 18:59:55,747 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 48 [2021-12-06 18:59:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:55,747 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2021-12-06 18:59:55,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2021-12-06 18:59:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:59:55,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:55,747 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:55,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:59:55,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:55,949 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1760952197, now seen corresponding path program 1 times [2021-12-06 18:59:55,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090176246] [2021-12-06 18:59:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:55,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:56,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090176246] [2021-12-06 18:59:56,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090176246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:56,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708608369] [2021-12-06 18:59:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:56,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:56,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:56,104 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:56,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:59:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:56,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 18:59:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:59:56,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:56,327 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 18:59:56,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 18:59:56,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-12-06 18:59:56,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-06 18:59:56,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 18:59:56,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2021-12-06 18:59:56,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 18:59:56,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-06 18:59:56,841 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 18:59:56,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2021-12-06 18:59:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 18:59:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:56,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:59:57,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 18:59:57,391 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1811 (Array Int Int)) (v_ArrVal_1809 Int)) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (let ((.cse1 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|))) (or (not (= .cse0 0)) (and (or (not .cse1) (not .cse2)) (forall ((v_arrayElimCell_281 Int)) (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (select (select .cse3 v_arrayElimCell_281) (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) 0))) (and .cse1 (= (select (select .cse4 |c_ULTIMATE.start_append_~item~0#1.base|) .cse0) 0) .cse2))))) is different from false [2021-12-06 18:59:57,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1811 (Array Int Int)) (v_ArrVal_1809 Int)) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset| |c_ULTIMATE.start_append_#t~mem4#1.offset|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (let ((.cse2 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse3 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|)) (.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (or (and (= (select (select .cse0 |c_ULTIMATE.start_append_~item~0#1.base|) .cse1) 0) .cse2 .cse3) (and (or (not .cse2) (not .cse3)) (forall ((v_arrayElimCell_281 Int)) (= (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset| |c_ULTIMATE.start_append_#t~mem4#1.offset|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (select (select .cse4 v_arrayElimCell_281) (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) 0))) (not (= .cse1 0)))))) is different from false [2021-12-06 18:59:58,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:58,170 INFO L354 Elim1Store]: treesize reduction 162, result has 38.9 percent of original size [2021-12-06 18:59:58,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 144 [2021-12-06 18:59:58,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:58,201 INFO L354 Elim1Store]: treesize reduction 13, result has 63.9 percent of original size [2021-12-06 18:59:58,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 115 [2021-12-06 18:59:58,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:59:58,231 INFO L354 Elim1Store]: treesize reduction 13, result has 63.9 percent of original size [2021-12-06 18:59:58,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 92 [2021-12-06 18:59:58,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:59:58,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 66 [2021-12-06 18:59:58,258 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 18:59:58,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 18:59:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-06 18:59:58,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708608369] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:59:58,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:59:58,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 36 [2021-12-06 18:59:58,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751346076] [2021-12-06 18:59:58,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:59:58,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 18:59:58,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 18:59:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1021, Unknown=35, NotChecked=134, Total=1332 [2021-12-06 18:59:58,528 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:58,632 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#list~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset|) 0) (not (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_main_~#list~0#1.base|) 1) (= |c_ULTIMATE.start_append_#t~mem4#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset|) 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 0) (= |c_ULTIMATE.start_append_~item~0#1.offset| 0) (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|) (not (= |c_ULTIMATE.start_append_~plist#1.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (forall ((v_ArrVal_1811 (Array Int Int)) (v_ArrVal_1809 Int)) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (let ((.cse1 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|))) (or (not (= .cse0 0)) (and (or (not .cse1) (not .cse2)) (forall ((v_arrayElimCell_281 Int)) (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (select (select .cse3 v_arrayElimCell_281) (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) 0))) (and .cse1 (= (select (select .cse4 |c_ULTIMATE.start_append_~item~0#1.base|) .cse0) 0) .cse2))))) (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|)) is different from false [2021-12-06 18:59:58,636 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#list~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset|) 0) (not (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset|) 0) (= |c_ULTIMATE.start_append_~item~0#1.offset| 0) (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|) (forall ((v_ArrVal_1811 (Array Int Int)) (v_ArrVal_1809 Int)) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (let ((.cse1 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|))) (or (not (= .cse0 0)) (and (or (not .cse1) (not .cse2)) (forall ((v_arrayElimCell_281 Int)) (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (select (select .cse3 v_arrayElimCell_281) (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) 0))) (and .cse1 (= (select (select .cse4 |c_ULTIMATE.start_append_~item~0#1.base|) .cse0) 0) .cse2))))) (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|)) is different from false [2021-12-06 18:59:58,916 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (select |c_#memory_$Pointer$.offset| .cse1))) (and (= |c_ULTIMATE.start_main_~#list~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset|) 0) (not (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (= (select |c_#valid| |c_ULTIMATE.start_main_~#list~0#1.base|) 1) (= |c_ULTIMATE.start_append_#t~mem4#1.offset| 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset|) 0) (= .cse0 0) (= |c_ULTIMATE.start_append_~item~0#1.offset| 0) (not (= |c_ULTIMATE.start_main_~#list~0#1.base| .cse1)) (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|) (= (select .cse2 .cse0) 0) (not (= |c_ULTIMATE.start_append_~plist#1.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (= (select .cse2 0) 0) (forall ((v_ArrVal_1811 (Array Int Int)) (v_ArrVal_1809 Int)) (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (let ((.cse4 (= |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse3 (select (select .cse7 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse5 (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|))) (or (not (= .cse3 0)) (and (or (not .cse4) (not .cse5)) (forall ((v_arrayElimCell_281 Int)) (= (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4) v_ArrVal_1809)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1811))) (select (select .cse6 v_arrayElimCell_281) (select (select .cse6 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) 0))) (and .cse4 (= (select (select .cse7 |c_ULTIMATE.start_append_~item~0#1.base|) .cse3) 0) .cse5))))) (= |c_ULTIMATE.start_main_~#list~0#1.base| |c_ULTIMATE.start_append_~plist#1.base|)))) is different from false [2021-12-06 18:59:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:59,219 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-12-06 18:59:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 18:59:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 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 52 [2021-12-06 18:59:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:59,220 INFO L225 Difference]: With dead ends: 143 [2021-12-06 18:59:59,220 INFO L226 Difference]: Without dead ends: 143 [2021-12-06 18:59:59,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=415, Invalid=1726, Unknown=41, NotChecked=470, Total=2652 [2021-12-06 18:59:59,220 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 200 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:59,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 808 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 332 Invalid, 0 Unknown, 230 Unchecked, 0.2s Time] [2021-12-06 18:59:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-06 18:59:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-12-06 18:59:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 128 states have (on average 1.15625) internal successors, (148), 140 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2021-12-06 18:59:59,223 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 52 [2021-12-06 18:59:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:59,223 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2021-12-06 18:59:59,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.6944444444444446) internal successors, (133), 37 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2021-12-06 18:59:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:59:59,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:59,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:59,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:59:59,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:59,424 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1760938264, now seen corresponding path program 1 times [2021-12-06 18:59:59,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:59,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869032552] [2021-12-06 18:59:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:59,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:59:59,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:59,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869032552] [2021-12-06 18:59:59,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869032552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:59:59,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:59:59,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:59:59,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886939847] [2021-12-06 18:59:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:59:59,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:59:59,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:59:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:59:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:59:59,462 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:59,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:59:59,544 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2021-12-06 18:59:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:59:59,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-06 18:59:59,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:59:59,545 INFO L225 Difference]: With dead ends: 146 [2021-12-06 18:59:59,545 INFO L226 Difference]: Without dead ends: 146 [2021-12-06 18:59:59,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:59:59,546 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 25 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:59:59,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 131 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:59:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-06 18:59:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2021-12-06 18:59:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.1484375) internal successors, (147), 139 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 147 transitions. [2021-12-06 18:59:59,548 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 147 transitions. Word has length 52 [2021-12-06 18:59:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:59:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 147 transitions. [2021-12-06 18:59:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:59:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 147 transitions. [2021-12-06 18:59:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 18:59:59,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:59:59,549 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:59:59,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 18:59:59,549 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 18:59:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:59:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1760938265, now seen corresponding path program 1 times [2021-12-06 18:59:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:59:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655196437] [2021-12-06 18:59:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:59,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:59:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:59:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:59:59,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:59:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655196437] [2021-12-06 18:59:59,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655196437] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:59:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599108434] [2021-12-06 18:59:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:59:59,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:59:59,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:59:59,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:59:59,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 19:00:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:00,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-06 19:00:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:00,091 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:00:00,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:00:00,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:00:00,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:00:00,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:00:00,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:00:00,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 19:00:00,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 19:00:00,695 INFO L354 Elim1Store]: treesize reduction 55, result has 25.7 percent of original size [2021-12-06 19:00:00,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 55 [2021-12-06 19:00:00,699 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:00:00,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2021-12-06 19:00:00,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2021-12-06 19:00:00,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-12-06 19:00:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:00,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:01,311 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1980)) (.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse1 (select (select .cse4 .cse3) .cse0))) (or (not (= .cse0 0)) (<= (+ .cse1 8) (select |c_#length| (select (select .cse2 .cse3) .cse0))) (< .cse1 0)))))) is different from false [2021-12-06 19:00:01,341 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1978 Int) (v_ArrVal_1977 Int)) (let ((.cse6 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse6 v_ArrVal_1977)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1980)) (.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse6 v_ArrVal_1978)))) (store .cse5 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse5 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse0 (select (select .cse4 .cse2) .cse3))) (or (<= (+ .cse0 8) (select |c_#length| (select (select .cse1 .cse2) .cse3))) (not (= .cse3 0)) (< .cse0 0))))))) is different from false [2021-12-06 19:00:01,375 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:00:01,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 166 [2021-12-06 19:00:01,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1978 Int) (v_ArrVal_1977 Int)) (let ((.cse6 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse6 v_ArrVal_1977)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1980)) (.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse6 v_ArrVal_1978)))) (store .cse5 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse5 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse0 (select (select .cse4 .cse2) .cse3))) (or (and (<= .cse0 |c_ULTIMATE.start_append_#t~mem6#1.offset|) (= (select (select .cse1 .cse2) .cse3) |c_ULTIMATE.start_append_#t~mem6#1.base|)) (not (= .cse3 0)) (< .cse0 0))))))) is different from false [2021-12-06 19:00:01,591 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array Int Int)) (v_ArrVal_1978 Int) (v_ArrVal_1977 Int)) (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|)) (.cse5 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store .cse5 .cse8 v_ArrVal_1977)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_1980)) (.cse0 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store .cse3 .cse8 v_ArrVal_1978)))) (store .cse7 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse7 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse4 (select (select .cse6 .cse1) .cse2))) (or (and (= (select (select .cse0 .cse1) .cse2) (select .cse3 |c_ULTIMATE.start_append_~item~0#1.offset|)) (<= .cse4 (select .cse5 |c_ULTIMATE.start_append_~item~0#1.offset|))) (not (= .cse2 0)) (< .cse4 0))))))) is different from false [2021-12-06 19:00:01,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:00:01,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 13755 treesize of output 13035 [2021-12-06 19:00:02,177 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 19:00:02,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 12246 treesize of output 6960 [2021-12-06 19:00:02,899 INFO L354 Elim1Store]: treesize reduction 228, result has 53.5 percent of original size [2021-12-06 19:00:02,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 45 case distinctions, treesize of input 12809 treesize of output 11154 [2021-12-06 19:00:03,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:00:03,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 10991 treesize of output 10153 [2021-12-06 19:00:03,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 19:00:03,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:00:03,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 19:00:03,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654510117] [2021-12-06 19:00:03,358 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:03,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 19:00:03,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 19:00:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1647, Unknown=4, NotChecked=340, Total=2162 [2021-12-06 19:00:03,359 INFO L87 Difference]: Start difference. First operand 140 states and 147 transitions. Second operand has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 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) [2021-12-06 19:00:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:04,357 INFO L93 Difference]: Finished difference Result 190 states and 197 transitions. [2021-12-06 19:00:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:00:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 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) Word has length 52 [2021-12-06 19:00:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:04,358 INFO L225 Difference]: With dead ends: 190 [2021-12-06 19:00:04,358 INFO L226 Difference]: Without dead ends: 190 [2021-12-06 19:00:04,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=462, Invalid=3582, Unknown=4, NotChecked=508, Total=4556 [2021-12-06 19:00:04,359 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 513 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:04,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 374 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:00:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-06 19:00:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 142. [2021-12-06 19:00:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.146153846153846) internal successors, (149), 141 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 149 transitions. [2021-12-06 19:00:04,361 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 149 transitions. Word has length 52 [2021-12-06 19:00:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:04,362 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 149 transitions. [2021-12-06 19:00:04,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.25) internal successors, (52), 17 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) [2021-12-06 19:00:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 149 transitions. [2021-12-06 19:00:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:00:04,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:04,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:04,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 19:00:04,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 19:00:04,563 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 19:00:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1245056580, now seen corresponding path program 1 times [2021-12-06 19:00:04,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:04,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163925777] [2021-12-06 19:00:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:04,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:04,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:04,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163925777] [2021-12-06 19:00:04,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163925777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:00:04,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492260425] [2021-12-06 19:00:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:04,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:04,739 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:04,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 19:00:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:04,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-06 19:00:04,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:04,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:00:04,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:00:04,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:00:05,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-12-06 19:00:05,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2021-12-06 19:00:05,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-12-06 19:00:05,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-06 19:00:05,496 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-06 19:00:05,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 28 [2021-12-06 19:00:05,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-06 19:00:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:05,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:05,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2021-12-06 19:00:19,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:00:19,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2021-12-06 19:00:19,966 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:00:19,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-06 19:00:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:20,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492260425] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:00:20,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:00:20,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 37 [2021-12-06 19:00:20,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669446596] [2021-12-06 19:00:20,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:00:20,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 19:00:20,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:00:20,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 19:00:20,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1257, Unknown=5, NotChecked=0, Total=1406 [2021-12-06 19:00:20,057 INFO L87 Difference]: Start difference. First operand 142 states and 149 transitions. Second operand has 38 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 38 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:00:30,712 INFO L93 Difference]: Finished difference Result 165 states and 173 transitions. [2021-12-06 19:00:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:00:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 38 states have internal predecessors, (134), 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 53 [2021-12-06 19:00:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:00:30,713 INFO L225 Difference]: With dead ends: 165 [2021-12-06 19:00:30,713 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 19:00:30,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=583, Invalid=2599, Unknown=10, NotChecked=0, Total=3192 [2021-12-06 19:00:30,714 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 269 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:00:30,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 755 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 710 Invalid, 0 Unknown, 195 Unchecked, 0.4s Time] [2021-12-06 19:00:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 19:00:30,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 149. [2021-12-06 19:00:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 137 states have (on average 1.167883211678832) internal successors, (160), 148 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:30,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2021-12-06 19:00:30,716 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 53 [2021-12-06 19:00:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:00:30,717 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2021-12-06 19:00:30,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.6216216216216215) internal successors, (134), 38 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:00:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2021-12-06 19:00:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 19:00:30,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:00:30,717 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:00:30,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 19:00:30,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 19:00:30,919 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 51 more)] === [2021-12-06 19:00:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:00:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1245488579, now seen corresponding path program 1 times [2021-12-06 19:00:30,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:00:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700548672] [2021-12-06 19:00:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:30,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:00:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:31,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:00:31,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700548672] [2021-12-06 19:00:31,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700548672] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:00:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803932000] [2021-12-06 19:00:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:00:31,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:00:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:00:31,384 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:00:31,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_444c3fa7-f4fb-4cd6-a887-d43c6855caba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 19:00:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:00:31,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 113 conjunts are in the unsatisfiable core [2021-12-06 19:00:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:00:31,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:00:31,525 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:00:31,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:00:31,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:00:31,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:00:31,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 19:00:31,760 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-06 19:00:31,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:00:31,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2021-12-06 19:00:31,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-06 19:00:32,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2021-12-06 19:00:32,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2021-12-06 19:00:32,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2021-12-06 19:00:32,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2021-12-06 19:00:32,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 19:00:32,722 INFO L354 Elim1Store]: treesize reduction 59, result has 20.3 percent of original size [2021-12-06 19:00:32,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 66 [2021-12-06 19:00:32,727 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:00:32,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2021-12-06 19:00:32,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-12-06 19:00:32,990 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:00:32,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 21 [2021-12-06 19:00:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:00:32,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:00:33,342 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2220 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_2220))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~#list~0#1.offset|))) (or (not (= .cse0 0)) (= 0 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|)))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse3 (select (select .cse1 .cse5) .cse0))) (select (select (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse3)) (select (select .cse4 .cse5) .cse0)) (+ 4 .cse3))))))))))) is different from false [2021-12-06 19:00:33,371 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2216 Int) (v_ArrVal_2215 Int) (v_ArrVal_2220 (Array Int Int))) (let ((.cse7 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) .cse7 v_ArrVal_2215)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_2220))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse5 (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.offset|))) (or (= (let ((.cse3 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) .cse7 v_ArrVal_2216)))) (store .cse6 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse6 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse2 (select (select .cse0 .cse4) .cse5))) (select (select (store .cse0 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse2)) (select (select .cse3 .cse4) .cse5)) (+ .cse2 4))))) 0) (not (= .cse5 0)))))))) is different from false [2021-12-06 19:00:33,466 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2216 Int) (v_ArrVal_2215 Int) (v_ArrVal_2220 (Array Int Int))) (let ((.cse7 (+ |c_ULTIMATE.start_append_~item~0#1.offset| 4))) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset| |c_ULTIMATE.start_append_#t~mem4#1.offset|) .cse7 v_ArrVal_2215)) |c_ULTIMATE.start_append_~plist#1.base| v_ArrVal_2220))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~#list~0#1.offset|))) (or (not (= .cse0 0)) (= (let ((.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_append_~item~0#1.base|) |c_ULTIMATE.start_append_~item~0#1.offset| |c_ULTIMATE.start_append_#t~mem4#1.base|) .cse7 v_ArrVal_2216)))) (store .cse6 |c_ULTIMATE.start_append_~plist#1.base| (store (select .cse6 |c_ULTIMATE.start_append_~plist#1.base|) |c_ULTIMATE.start_append_~plist#1.offset| |c_ULTIMATE.start_append_~item~0#1.base|))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse3 (select (select .cse1 .cse5) .cse0))) (select (select (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#list~0#1.offset| .cse3)) (select (select .cse4 .cse5) .cse0)) (+ 4 .cse3))))) 0))))))) is different from false [2021-12-06 19:00:33,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:00:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:00:33,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 494 treesize of output 490 [2021-12-06 19:00:44,286 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-12-06 19:00:44,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 42 [2021-12-06 19:00:56,369 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-12-06 19:00:56,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 42 [2021-12-06 19:01:02,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:02,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:02,950 INFO L354 Elim1Store]: treesize reduction 414, result has 39.6 percent of original size [2021-12-06 19:01:02,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 15 case distinctions, treesize of input 6154 treesize of output 1528 [2021-12-06 19:01:02,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:02,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:03,751 INFO L354 Elim1Store]: treesize reduction 179, result has 64.9 percent of original size [2021-12-06 19:01:03,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 43 case distinctions, treesize of input 1918 treesize of output 2028 [2021-12-06 19:01:03,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:03,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:04,726 INFO L354 Elim1Store]: treesize reduction 166, result has 67.5 percent of original size [2021-12-06 19:01:04,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 43 case distinctions, treesize of input 2418 treesize of output 2541 [2021-12-06 19:01:04,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:04,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:01:05,679 INFO L354 Elim1Store]: treesize reduction 210, result has 58.8 percent of original size [2021-12-06 19:01:05,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 43 case distinctions, treesize of input 3321 treesize of output 3196 [2021-12-06 19:01:05,979 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:01:05,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 4066 treesize of output 3500 [2021-12-06 19:01:06,171 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-06 19:01:06,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 19