./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0 --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 e4cb0386e6b22b9d67dd4f4c4c33eb167dcf1836f99794e4424c5e73e6fc14d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:06:03,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:06:03,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:06:03,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:06:03,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:06:03,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:06:03,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:06:03,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:06:03,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:06:03,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:06:03,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:06:03,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:06:03,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:06:03,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:06:03,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:06:03,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:06:03,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:06:03,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:06:03,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:06:03,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:06:03,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:06:03,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:06:03,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:06:03,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:06:03,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:06:03,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:06:03,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:06:03,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:06:03,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:06:03,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:06:03,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:06:03,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:06:03,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:06:03,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:06:03,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:06:03,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:06:03,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:06:03,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:06:03,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:06:03,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:06:03,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:06:03,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 16:06:03,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:06:03,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:06:03,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:06:03,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:06:03,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:06:03,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:06:03,744 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:06:03,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:06:03,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:06:03,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:06:03,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:06:03,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:06:03,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:06:03,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 16:06:03,747 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 16:06:03,747 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 16:06:03,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:06:03,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:06:03,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:06:03,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:06:03,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:06:03,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:06:03,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:06:03,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:06:03,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:06:03,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:06:03,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:06:03,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:06:03,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:06:03,751 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_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4cb0386e6b22b9d67dd4f4c4c33eb167dcf1836f99794e4424c5e73e6fc14d4 [2021-11-22 16:06:04,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:06:04,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:06:04,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:06:04,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:06:04,190 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:06:04,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2021-11-22 16:06:04,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/data/0e60c897f/e0b41c881394415e9db86d27cd81ee84/FLAGfd45f81a2 [2021-11-22 16:06:04,953 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:06:04,954 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2021-11-22 16:06:04,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/data/0e60c897f/e0b41c881394415e9db86d27cd81ee84/FLAGfd45f81a2 [2021-11-22 16:06:05,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/data/0e60c897f/e0b41c881394415e9db86d27cd81ee84 [2021-11-22 16:06:05,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:06:05,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:06:05,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:06:05,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:06:05,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:06:05,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f046273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05, skipping insertion in model container [2021-11-22 16:06:05,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:06:05,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:06:05,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i[24076,24089] [2021-11-22 16:06:05,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:06:05,708 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:06:05,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i[24076,24089] [2021-11-22 16:06:05,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:06:05,800 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:06:05,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05 WrapperNode [2021-11-22 16:06:05,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:06:05,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:06:05,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:06:05,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:06:05,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,859 INFO L137 Inliner]: procedures = 127, calls = 30, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 119 [2021-11-22 16:06:05,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:06:05,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:06:05,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:06:05,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:06:05,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:06:05,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:06:05,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:06:05,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:06:05,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (1/1) ... [2021-11-22 16:06:05,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:06:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:05,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:06:05,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:06:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 16:06:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 16:06:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 16:06:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:06:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:06:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 16:06:06,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 16:06:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:06:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 16:06:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:06:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:06:06,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:06:06,136 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:06:06,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:06:06,591 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:06:06,600 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:06:06,600 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 16:06:06,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:06 BoogieIcfgContainer [2021-11-22 16:06:06,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:06:06,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:06:06,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:06:06,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:06:06,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:06:05" (1/3) ... [2021-11-22 16:06:06,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8df5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:06, skipping insertion in model container [2021-11-22 16:06:06,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:05" (2/3) ... [2021-11-22 16:06:06,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8df5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:06, skipping insertion in model container [2021-11-22 16:06:06,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:06" (3/3) ... [2021-11-22 16:06:06,623 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2021-11-22 16:06:06,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:06:06,631 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-22 16:06:06,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:06:06,689 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 [2021-11-22 16:06:06,689 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-22 16:06:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 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) [2021-11-22 16:06:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 16:06:06,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:06,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 16:06:06,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:06,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 28698858, now seen corresponding path program 1 times [2021-11-22 16:06:06,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:06,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160169586] [2021-11-22 16:06:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:06,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:07,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:07,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160169586] [2021-11-22 16:06:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160169586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:07,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:07,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4649861] [2021-11-22 16:06:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:07,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:07,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:07,092 INFO L87 Difference]: Start difference. First operand has 77 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 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) [2021-11-22 16:06:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:07,254 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-11-22 16:06:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:07,257 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 [2021-11-22 16:06:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:07,272 INFO L225 Difference]: With dead ends: 88 [2021-11-22 16:06:07,272 INFO L226 Difference]: Without dead ends: 84 [2021-11-22 16:06:07,274 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 [2021-11-22 16:06:07,279 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 68 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:07,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-22 16:06:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 69. [2021-11-22 16:06:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 68 states have internal predecessors, (72), 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) [2021-11-22 16:06:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-11-22 16:06:07,331 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 5 [2021-11-22 16:06:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:07,331 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-11-22 16:06:07,331 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) [2021-11-22 16:06:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-11-22 16:06:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-22 16:06:07,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:07,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-22 16:06:07,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:06:07,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash 28698859, now seen corresponding path program 1 times [2021-11-22 16:06:07,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:07,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89303168] [2021-11-22 16:06:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:07,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:07,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:07,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89303168] [2021-11-22 16:06:07,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89303168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:07,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:07,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:07,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780107057] [2021-11-22 16:06:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:07,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:07,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:07,411 INFO L87 Difference]: Start difference. First operand 69 states and 72 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) [2021-11-22 16:06:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:07,502 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-22 16:06:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:07,505 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 [2021-11-22 16:06:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:07,506 INFO L225 Difference]: With dead ends: 68 [2021-11-22 16:06:07,510 INFO L226 Difference]: Without dead ends: 68 [2021-11-22 16:06:07,511 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 [2021-11-22 16:06:07,514 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:07,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-22 16:06:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-11-22 16:06:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.619047619047619) internal successors, (68), 64 states have internal predecessors, (68), 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) [2021-11-22 16:06:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-11-22 16:06:07,534 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 5 [2021-11-22 16:06:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:07,534 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-11-22 16:06:07,535 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) [2021-11-22 16:06:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-11-22 16:06:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:06:07,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:07,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:07,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:06:07,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -245418610, now seen corresponding path program 1 times [2021-11-22 16:06:07,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:07,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306849731] [2021-11-22 16:06:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:07,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:07,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306849731] [2021-11-22 16:06:07,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306849731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:07,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:07,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:07,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4485890] [2021-11-22 16:06:07,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:07,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:07,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:07,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:07,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:07,625 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:07,843 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-11-22 16:06:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:06:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 16:06:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:07,846 INFO L225 Difference]: With dead ends: 132 [2021-11-22 16:06:07,846 INFO L226 Difference]: Without dead ends: 132 [2021-11-22 16:06:07,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:07,848 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 169 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:07,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 113 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-22 16:06:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 64. [2021-11-22 16:06:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 63 states have internal predecessors, (67), 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) [2021-11-22 16:06:07,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-11-22 16:06:07,860 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2021-11-22 16:06:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:07,861 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-11-22 16:06:07,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-11-22 16:06:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:06:07,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:07,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:07,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:06:07,863 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -245418609, now seen corresponding path program 1 times [2021-11-22 16:06:07,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:07,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652004383] [2021-11-22 16:06:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:07,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:08,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:08,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652004383] [2021-11-22 16:06:08,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652004383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:08,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:08,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:08,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417716482] [2021-11-22 16:06:08,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:08,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:08,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:08,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:08,010 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:08,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:08,221 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2021-11-22 16:06:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:06:08,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 16:06:08,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:08,224 INFO L225 Difference]: With dead ends: 121 [2021-11-22 16:06:08,224 INFO L226 Difference]: Without dead ends: 121 [2021-11-22 16:06:08,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:08,226 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 174 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:08,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 108 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-22 16:06:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 63. [2021-11-22 16:06:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 62 states have internal predecessors, (66), 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) [2021-11-22 16:06:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-11-22 16:06:08,266 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 9 [2021-11-22 16:06:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:08,267 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-11-22 16:06:08,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-11-22 16:06:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 16:06:08,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:08,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:08,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:06:08,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1442029390, now seen corresponding path program 1 times [2021-11-22 16:06:08,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:08,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330088121] [2021-11-22 16:06:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:08,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:08,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:08,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330088121] [2021-11-22 16:06:08,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330088121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:08,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:08,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:08,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200950349] [2021-11-22 16:06:08,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:08,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:08,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:08,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:08,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:08,331 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-22 16:06:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:08,340 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-11-22 16:06:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-22 16:06:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:08,342 INFO L225 Difference]: With dead ends: 72 [2021-11-22 16:06:08,342 INFO L226 Difference]: Without dead ends: 72 [2021-11-22 16:06:08,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:08,344 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:08,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-22 16:06:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-11-22 16:06:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.558139534883721) internal successors, (67), 63 states have internal predecessors, (67), 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) [2021-11-22 16:06:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-11-22 16:06:08,352 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 11 [2021-11-22 16:06:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:08,353 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-11-22 16:06:08,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-22 16:06:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-11-22 16:06:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 16:06:08,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:08,354 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] [2021-11-22 16:06:08,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:06:08,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash 855633538, now seen corresponding path program 1 times [2021-11-22 16:06:08,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:08,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123969217] [2021-11-22 16:06:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:08,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:08,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:08,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123969217] [2021-11-22 16:06:08,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123969217] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:06:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951370985] [2021-11-22 16:06:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:08,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:08,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:08,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:06:08,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:06:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:08,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:06:08,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:06:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:08,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:06:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:08,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951370985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:06:08,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:06:08,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-22 16:06:08,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239867842] [2021-11-22 16:06:08,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:06:08,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:08,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:08,764 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-11-22 16:06:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:08,779 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2021-11-22 16:06:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 [2021-11-22 16:06:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:08,781 INFO L225 Difference]: With dead ends: 73 [2021-11-22 16:06:08,781 INFO L226 Difference]: Without dead ends: 73 [2021-11-22 16:06:08,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:08,783 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 16 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:08,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 181 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-22 16:06:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-22 16:06:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-11-22 16:06:08,790 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 20 [2021-11-22 16:06:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:08,791 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-11-22 16:06:08,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2021-11-22 16:06:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-11-22 16:06:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 16:06:08,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:08,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:08,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 16:06:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:09,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1941472818, now seen corresponding path program 2 times [2021-11-22 16:06:09,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:09,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048631959] [2021-11-22 16:06:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:09,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:06:09,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:09,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048631959] [2021-11-22 16:06:09,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048631959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:06:09,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829222821] [2021-11-22 16:06:09,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 16:06:09,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:09,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:09,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:06:09,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:06:09,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 16:06:09,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 16:06:09,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 16:06:09,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:06:09,496 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 [2021-11-22 16:06:09,569 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 16:06:09,569 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 15 treesize of output 17 [2021-11-22 16:06:09,965 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 16:06:09,965 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 3 case distinctions, treesize of input 27 treesize of output 32 [2021-11-22 16:06:10,259 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 16:06:10,260 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 3 case distinctions, treesize of input 22 treesize of output 27 [2021-11-22 16:06:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:06:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:06:27,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829222821] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 16:06:27,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:06:27,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2021-11-22 16:06:27,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019452228] [2021-11-22 16:06:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:27,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:27,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=89, Unknown=4, NotChecked=0, Total=132 [2021-11-22 16:06:27,329 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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) [2021-11-22 16:06:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:27,396 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2021-11-22 16:06:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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 [2021-11-22 16:06:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:27,398 INFO L225 Difference]: With dead ends: 83 [2021-11-22 16:06:27,398 INFO L226 Difference]: Without dead ends: 83 [2021-11-22 16:06:27,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=39, Invalid=89, Unknown=4, NotChecked=0, Total=132 [2021-11-22 16:06:27,400 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:27,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 77 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-22 16:06:27,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-22 16:06:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2021-11-22 16:06:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 70 states have internal predecessors, (74), 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) [2021-11-22 16:06:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-11-22 16:06:27,408 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 29 [2021-11-22 16:06:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:27,408 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-11-22 16:06:27,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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) [2021-11-22 16:06:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-11-22 16:06:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 16:06:27,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:27,410 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:27,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:06:27,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:27,616 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1941472817, now seen corresponding path program 1 times [2021-11-22 16:06:27,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584051562] [2021-11-22 16:06:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:27,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:06:27,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584051562] [2021-11-22 16:06:27,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584051562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:06:27,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025026730] [2021-11-22 16:06:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:27,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:27,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:27,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:06:27,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:06:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:27,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 16:06:27,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:06:27,953 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 [2021-11-22 16:06:28,003 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 16:06:28,004 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 15 treesize of output 17 [2021-11-22 16:06:28,280 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 16:06:28,281 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 3 case distinctions, treesize of input 23 treesize of output 28 [2021-11-22 16:06:28,576 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-22 16:06:28,577 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 3 case distinctions, treesize of input 27 treesize of output 32 [2021-11-22 16:06:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 16:06:28,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:06:28,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025026730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:28,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:06:28,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-22 16:06:28,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758135255] [2021-11-22 16:06:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:28,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:28,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:28,723 INFO L87 Difference]: Start difference. First operand 71 states and 74 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) [2021-11-22 16:06:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:28,764 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-11-22 16:06:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:06:28,764 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 29 [2021-11-22 16:06:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:28,766 INFO L225 Difference]: With dead ends: 70 [2021-11-22 16:06:28,767 INFO L226 Difference]: Without dead ends: 70 [2021-11-22 16:06:28,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:28,768 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:28,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 118 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2021-11-22 16:06:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-22 16:06:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-22 16:06:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 69 states have internal predecessors, (73), 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) [2021-11-22 16:06:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-11-22 16:06:28,795 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 29 [2021-11-22 16:06:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:28,795 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-11-22 16:06:28,796 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) [2021-11-22 16:06:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-11-22 16:06:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:06:28,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:28,801 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:28,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:06:29,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:29,023 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash -56115186, now seen corresponding path program 1 times [2021-11-22 16:06:29,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360524568] [2021-11-22 16:06:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:29,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:29,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360524568] [2021-11-22 16:06:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360524568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:29,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84029324] [2021-11-22 16:06:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:29,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:29,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:29,134 INFO L87 Difference]: Start difference. First operand 70 states and 73 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) [2021-11-22 16:06:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,252 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-11-22 16:06:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:06:29,252 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 30 [2021-11-22 16:06:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,253 INFO L225 Difference]: With dead ends: 81 [2021-11-22 16:06:29,253 INFO L226 Difference]: Without dead ends: 81 [2021-11-22 16:06:29,254 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 [2021-11-22 16:06:29,254 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 139 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 61 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-22 16:06:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-11-22 16:06:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 68 states have internal predecessors, (72), 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) [2021-11-22 16:06:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-11-22 16:06:29,260 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 30 [2021-11-22 16:06:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:29,261 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-11-22 16:06:29,261 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) [2021-11-22 16:06:29,261 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-11-22 16:06:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 16:06:29,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:29,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:29,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:06:29,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,264 INFO L85 PathProgramCache]: Analyzing trace with hash -56115185, now seen corresponding path program 1 times [2021-11-22 16:06:29,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009191722] [2021-11-22 16:06:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:29,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:29,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009191722] [2021-11-22 16:06:29,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009191722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:29,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:29,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:29,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17444068] [2021-11-22 16:06:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:29,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:29,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:29,353 INFO L87 Difference]: Start difference. First operand 69 states and 72 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) [2021-11-22 16:06:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,471 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2021-11-22 16:06:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:06:29,472 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 30 [2021-11-22 16:06:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,473 INFO L225 Difference]: With dead ends: 68 [2021-11-22 16:06:29,473 INFO L226 Difference]: Without dead ends: 68 [2021-11-22 16:06:29,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:06:29,475 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 144 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 39 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-22 16:06:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-22 16:06:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 67 states have internal predecessors, (71), 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) [2021-11-22 16:06:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2021-11-22 16:06:29,479 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 30 [2021-11-22 16:06:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:29,480 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2021-11-22 16:06:29,480 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) [2021-11-22 16:06:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2021-11-22 16:06:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 16:06:29,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:29,482 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:29,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:06:29,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1907882096, now seen corresponding path program 1 times [2021-11-22 16:06:29,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936429079] [2021-11-22 16:06:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:29,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936429079] [2021-11-22 16:06:29,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936429079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:29,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:29,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:29,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896473423] [2021-11-22 16:06:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:29,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:29,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:29,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:29,559 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 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) [2021-11-22 16:06:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,613 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-11-22 16:06:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:06:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 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 32 [2021-11-22 16:06:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,615 INFO L225 Difference]: With dead ends: 67 [2021-11-22 16:06:29,615 INFO L226 Difference]: Without dead ends: 67 [2021-11-22 16:06:29,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:06:29,617 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 124 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-22 16:06:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-22 16:06:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 66 states have internal predecessors, (70), 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) [2021-11-22 16:06:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-11-22 16:06:29,621 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 32 [2021-11-22 16:06:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:29,622 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-11-22 16:06:29,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 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) [2021-11-22 16:06:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-11-22 16:06:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 16:06:29,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:29,624 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:29,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:06:29,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,625 INFO L85 PathProgramCache]: Analyzing trace with hash -476340944, now seen corresponding path program 1 times [2021-11-22 16:06:29,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675040000] [2021-11-22 16:06:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:29,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:29,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675040000] [2021-11-22 16:06:29,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675040000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:29,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:29,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:06:29,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436464500] [2021-11-22 16:06:29,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:29,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:06:29,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:29,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:06:29,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:29,698 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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) [2021-11-22 16:06:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,774 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-11-22 16:06:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:06:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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 34 [2021-11-22 16:06:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,775 INFO L225 Difference]: With dead ends: 77 [2021-11-22 16:06:29,776 INFO L226 Difference]: Without dead ends: 77 [2021-11-22 16:06:29,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:06:29,777 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 66 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 67 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-22 16:06:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2021-11-22 16:06:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 64 states have internal predecessors, (68), 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) [2021-11-22 16:06:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-11-22 16:06:29,781 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 34 [2021-11-22 16:06:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:29,781 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-11-22 16:06:29,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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) [2021-11-22 16:06:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-11-22 16:06:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 16:06:29,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:29,782 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:29,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:06:29,783 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -476340943, now seen corresponding path program 1 times [2021-11-22 16:06:29,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707435655] [2021-11-22 16:06:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:29,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:29,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707435655] [2021-11-22 16:06:29,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707435655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:29,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:29,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 16:06:29,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460461384] [2021-11-22 16:06:29,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:29,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:06:29,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:06:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:06:29,915 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-22 16:06:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,971 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-11-22 16:06:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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 34 [2021-11-22 16:06:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,973 INFO L225 Difference]: With dead ends: 63 [2021-11-22 16:06:29,973 INFO L226 Difference]: Without dead ends: 63 [2021-11-22 16:06:29,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:06:29,974 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 85 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-22 16:06:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-22 16:06:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 62 states have internal predecessors, (66), 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) [2021-11-22 16:06:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-11-22 16:06:29,978 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 34 [2021-11-22 16:06:29,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:29,978 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-11-22 16:06:29,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) [2021-11-22 16:06:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-11-22 16:06:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 16:06:29,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:29,979 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:29,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:06:29,980 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash -101076711, now seen corresponding path program 1 times [2021-11-22 16:06:29,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:29,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019111383] [2021-11-22 16:06:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:29,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:30,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:30,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019111383] [2021-11-22 16:06:30,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019111383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:30,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:30,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:06:30,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035531532] [2021-11-22 16:06:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:30,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 16:06:30,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 16:06:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:06:30,136 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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) [2021-11-22 16:06:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:30,388 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-11-22 16:06:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:06:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 37 [2021-11-22 16:06:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:30,390 INFO L225 Difference]: With dead ends: 94 [2021-11-22 16:06:30,390 INFO L226 Difference]: Without dead ends: 94 [2021-11-22 16:06:30,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-22 16:06:30,391 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 241 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:30,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 147 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-22 16:06:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 64. [2021-11-22 16:06:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 63 states have internal predecessors, (69), 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) [2021-11-22 16:06:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-11-22 16:06:30,395 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 37 [2021-11-22 16:06:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:30,395 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-11-22 16:06:30,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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) [2021-11-22 16:06:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-11-22 16:06:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 16:06:30,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:30,396 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:30,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:06:30,397 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:30,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash -101076710, now seen corresponding path program 1 times [2021-11-22 16:06:30,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:30,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751212928] [2021-11-22 16:06:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:30,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:30,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:30,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751212928] [2021-11-22 16:06:30,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751212928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:30,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:30,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:06:30,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849826720] [2021-11-22 16:06:30,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:30,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:06:30,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:06:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:30,573 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-11-22 16:06:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:30,979 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2021-11-22 16:06:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:06:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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 37 [2021-11-22 16:06:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:30,983 INFO L225 Difference]: With dead ends: 86 [2021-11-22 16:06:30,983 INFO L226 Difference]: Without dead ends: 86 [2021-11-22 16:06:30,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:06:30,984 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 246 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:30,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 118 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-22 16:06:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2021-11-22 16:06:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.25) internal successors, (70), 65 states have internal predecessors, (70), 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) [2021-11-22 16:06:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-11-22 16:06:30,988 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 37 [2021-11-22 16:06:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:30,988 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-11-22 16:06:30,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 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) [2021-11-22 16:06:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-11-22 16:06:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 16:06:30,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:30,994 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:30,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:06:30,995 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1161587957, now seen corresponding path program 1 times [2021-11-22 16:06:30,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:30,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14650175] [2021-11-22 16:06:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:30,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:31,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:31,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14650175] [2021-11-22 16:06:31,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14650175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:31,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:31,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:06:31,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428063917] [2021-11-22 16:06:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:31,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:06:31,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:06:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:06:31,154 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-11-22 16:06:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:31,343 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-11-22 16:06:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:06:31,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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 38 [2021-11-22 16:06:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:31,345 INFO L225 Difference]: With dead ends: 69 [2021-11-22 16:06:31,345 INFO L226 Difference]: Without dead ends: 69 [2021-11-22 16:06:31,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:06:31,346 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 161 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:31,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 152 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-22 16:06:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-11-22 16:06:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 65 states have internal predecessors, (69), 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) [2021-11-22 16:06:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-22 16:06:31,350 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 38 [2021-11-22 16:06:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:31,350 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-22 16:06:31,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 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) [2021-11-22 16:06:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-22 16:06:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 16:06:31,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:31,351 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:06:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:06:31,351 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 355624576, now seen corresponding path program 1 times [2021-11-22 16:06:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809517993] [2021-11-22 16:06:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 16:06:31,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:31,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809517993] [2021-11-22 16:06:31,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809517993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:31,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:31,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 16:06:31,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154819354] [2021-11-22 16:06:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:31,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 16:06:31,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 16:06:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:06:31,671 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:32,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:32,140 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-11-22 16:06:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:06:32,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 16:06:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:32,142 INFO L225 Difference]: With dead ends: 67 [2021-11-22 16:06:32,142 INFO L226 Difference]: Without dead ends: 67 [2021-11-22 16:06:32,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:06:32,144 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 150 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:32,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 195 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-22 16:06:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-11-22 16:06:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 66 states have internal predecessors, (70), 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) [2021-11-22 16:06:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-11-22 16:06:32,149 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 41 [2021-11-22 16:06:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:32,149 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-11-22 16:06:32,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-11-22 16:06:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 16:06:32,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:32,151 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] [2021-11-22 16:06:32,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:06:32,151 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:06:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1860539548, now seen corresponding path program 1 times [2021-11-22 16:06:32,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:32,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843577884] [2021-11-22 16:06:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:32,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:06:32,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843577884] [2021-11-22 16:06:32,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843577884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:06:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257121195] [2021-11-22 16:06:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:32,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:06:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:32,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:06:32,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:06:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:32,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-22 16:06:32,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:06:33,089 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 [2021-11-22 16:06:33,449 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 16:06:33,450 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 18 [2021-11-22 16:06:33,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:06:33,581 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 [2021-11-22 16:06:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:06:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:06:33,693 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 34 treesize of output 25 [2021-11-22 16:06:34,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:06:34,054 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 16:06:34,054 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-22 16:06:34,236 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-22 16:06:34,237 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 60 [2021-11-22 16:06:34,243 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 60 treesize of output 56 [2021-11-22 16:06:34,382 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 71 treesize of output 59 [2021-11-22 16:06:34,901 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-22 16:06:34,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 37 [2021-11-22 16:06:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:06:34,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:06:35,191 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 [2021-11-22 16:06:50,700 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 34 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:07:03,970 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-22 16:07:03,971 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 10360 treesize of output 10000 [2021-11-22 16:09:59,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_node_create_~temp~0#1.base_31| Int)) (let ((.cse2 (= |c_ULTIMATE.start_main_~#s~0#1.offset| 4)) (.cse1 (store |c_#valid| |v_ULTIMATE.start_node_create_~temp~0#1.base_31| 1)) (.cse0 (= |v_ULTIMATE.start_node_create_~temp~0#1.base_31| |c_ULTIMATE.start_main_~#s~0#1.base|))) (or (and .cse0 (= (select .cse1 0) 1) .cse2) (<= |c_#StackHeapBarrier| |v_ULTIMATE.start_node_create_~temp~0#1.base_31|) (let ((.cse3 (not .cse0))) (and (or (not .cse2) .cse3) (let ((.cse4 (= |c_ULTIMATE.start_main_~#s~0#1.offset| 0))) (or (and (= (select .cse1 |c_ULTIMATE.start_node_create_#res#1.base|) 1) (or (not .cse4) .cse3)) (and .cse0 .cse4 (forall ((v_DerPreprocessor_1 Int)) (= (select (store |c_#valid| |v_ULTIMATE.start_node_create_~temp~0#1.base_31| 1) v_DerPreprocessor_1) 1)))))))))) is different from false [2021-11-22 16:10:10,907 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:10:10,907 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 83 treesize of output 87 [2021-11-22 16:10:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 9 times theorem prover too weak. 1 trivial. 1 not checked. [2021-11-22 16:10:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257121195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:10:19,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:10:19,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 52 [2021-11-22 16:10:19,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105345550] [2021-11-22 16:10:19,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:10:19,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-22 16:10:19,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:10:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-22 16:10:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2439, Unknown=17, NotChecked=100, Total=2756 [2021-11-22 16:10:19,278 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 53 states, 52 states have (on average 2.230769230769231) internal successors, (116), 53 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) [2021-11-22 16:10:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:10:22,547 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-11-22 16:10:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 16:10:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.230769230769231) internal successors, (116), 53 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) Word has length 42 [2021-11-22 16:10:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:10:22,549 INFO L225 Difference]: With dead ends: 90 [2021-11-22 16:10:22,549 INFO L226 Difference]: Without dead ends: 90 [2021-11-22 16:10:22,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=572, Invalid=3971, Unknown=17, NotChecked=132, Total=4692 [2021-11-22 16:10:22,554 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 201 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:10:22,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 457 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 616 Invalid, 0 Unknown, 348 Unchecked, 0.6s Time] [2021-11-22 16:10:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-22 16:10:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2021-11-22 16:10:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 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) [2021-11-22 16:10:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-11-22 16:10:22,558 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 42 [2021-11-22 16:10:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:10:22,559 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-11-22 16:10:22,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.230769230769231) internal successors, (116), 53 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) [2021-11-22 16:10:22,560 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-11-22 16:10:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 16:10:22,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:10:22,561 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] [2021-11-22 16:10:22,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:10:22,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 16:10:22,762 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:10:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:10:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1860539547, now seen corresponding path program 1 times [2021-11-22 16:10:22,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:10:22,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034024873] [2021-11-22 16:10:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:10:22,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:10:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:10:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:10:23,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:10:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034024873] [2021-11-22 16:10:23,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034024873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:10:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200905418] [2021-11-22 16:10:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:10:23,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:10:23,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:10:23,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:10:23,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:10:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:10:23,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-22 16:10:23,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:10:23,808 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 [2021-11-22 16:10:24,222 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-22 16:10:24,223 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 18 [2021-11-22 16:10:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,338 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 [2021-11-22 16:10:24,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,362 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 [2021-11-22 16:10:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,451 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 34 treesize of output 25 [2021-11-22 16:10:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,479 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 32 treesize of output 23 [2021-11-22 16:10:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,820 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 16:10:24,820 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-11-22 16:10:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:10:24,860 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 16:10:24,861 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-11-22 16:10:25,037 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-22 16:10:25,038 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 89 [2021-11-22 16:10:25,067 INFO L354 Elim1Store]: treesize reduction 75, result has 14.8 percent of original size [2021-11-22 16:10:25,067 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 89 treesize of output 77 [2021-11-22 16:10:25,759 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-11-22 16:10:25,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 78 [2021-11-22 16:10:25,765 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-22 16:10:25,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 45 [2021-11-22 16:10:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:10:25,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:12:46,430 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_1 Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (let ((.cse6 (+ v_prenex_1 4))) (let ((.cse0 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse8 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_3))) (store .cse8 .cse6 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse8) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| v_prenex_1)))) (.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse5 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_2))) (store .cse5 .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse5) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse4 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (<= (+ 8 (select (select .cse0 .cse1) .cse2)) (select |c_#length| (select (select .cse3 .cse1) .cse2))))))) (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (<= 0 (+ (let ((.cse12 (+ |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| 4))) (let ((.cse9 (let ((.cse13 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse14 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_3))) (store .cse14 .cse12 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse14) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse13 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse13 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|))))) (select (select .cse9 (select (select (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse11 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_2))) (store .cse11 .cse12 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse11) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse10 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select .cse9 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4)))) 4)))) is different from false [2021-11-22 16:13:47,877 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 605 treesize of output 597 [2021-11-22 16:13:47,891 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 1429 treesize of output 1377 [2021-11-22 16:13:47,953 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 16:13:47,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:13:47,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-22 16:13:47,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855964368] [2021-11-22 16:13:47,953 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 16:13:47,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 16:13:47,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:13:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 16:13:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2134, Unknown=73, NotChecked=94, Total=2450 [2021-11-22 16:13:47,956 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:13:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:13:55,194 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2021-11-22 16:13:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 16:13:55,195 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-22 16:13:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:13:55,196 INFO L225 Difference]: With dead ends: 117 [2021-11-22 16:13:55,196 INFO L226 Difference]: Without dead ends: 117 [2021-11-22 16:13:55,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 209.8s TimeCoverageRelationStatistics Valid=526, Invalid=4233, Unknown=75, NotChecked=136, Total=4970 [2021-11-22 16:13:55,200 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 655 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:13:55,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 213 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 16:13:55,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-22 16:13:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 71. [2021-11-22 16:13:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:13:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2021-11-22 16:13:55,203 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 42 [2021-11-22 16:13:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:13:55,203 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2021-11-22 16:13:55,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:13:55,204 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2021-11-22 16:13:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 16:13:55,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:13:55,204 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 16:13:55,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:13:55,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:13:55,422 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:13:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:13:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1842152438, now seen corresponding path program 1 times [2021-11-22 16:13:55,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:13:55,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661527477] [2021-11-22 16:13:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:13:55,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:13:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:13:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:13:55,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:13:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661527477] [2021-11-22 16:13:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661527477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:13:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323024832] [2021-11-22 16:13:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:13:55,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:13:55,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:13:55,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:13:55,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 16:13:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:13:55,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-22 16:13:55,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:13:56,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:13:56,183 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 22 treesize of output 21 [2021-11-22 16:13:56,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:13:56,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:13:56,245 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 33 treesize of output 24 [2021-11-22 16:13:56,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:13:56,446 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 16:13:56,446 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-22 16:13:56,586 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-22 16:13:56,586 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 54 [2021-11-22 16:13:56,590 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 50 treesize of output 46 [2021-11-22 16:13:56,661 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 61 treesize of output 49 [2021-11-22 16:13:56,840 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-22 16:13:56,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 31 [2021-11-22 16:13:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:13:56,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:13:56,996 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 82 treesize of output 78 [2021-11-22 16:14:21,313 WARN L227 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 16:14:32,641 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 106 treesize of output 98 [2021-11-22 16:14:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:14:33,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323024832] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:14:33,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:14:33,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 52 [2021-11-22 16:14:33,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200826222] [2021-11-22 16:14:33,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:14:33,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-22 16:14:33,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:14:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-22 16:14:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2469, Unknown=3, NotChecked=0, Total=2652 [2021-11-22 16:14:33,510 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 52 states, 52 states have (on average 2.25) internal successors, (117), 52 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) [2021-11-22 16:14:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:14:38,648 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-11-22 16:14:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 16:14:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 52 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) Word has length 43 [2021-11-22 16:14:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:14:38,649 INFO L225 Difference]: With dead ends: 74 [2021-11-22 16:14:38,649 INFO L226 Difference]: Without dead ends: 74 [2021-11-22 16:14:38,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=572, Invalid=3981, Unknown=3, NotChecked=0, Total=4556 [2021-11-22 16:14:38,652 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 127 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:14:38,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 956 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 774 Invalid, 0 Unknown, 266 Unchecked, 0.4s Time] [2021-11-22 16:14:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-22 16:14:38,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2021-11-22 16:14:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 70 states have internal predecessors, (74), 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) [2021-11-22 16:14:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-11-22 16:14:38,655 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 43 [2021-11-22 16:14:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:14:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-11-22 16:14:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.25) internal successors, (117), 52 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) [2021-11-22 16:14:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-11-22 16:14:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 16:14:38,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:14:38,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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] [2021-11-22 16:14:38,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:14:38,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:14:38,866 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 27 more)] === [2021-11-22 16:14:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:14:38,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1569129291, now seen corresponding path program 1 times [2021-11-22 16:14:38,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:14:38,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565007118] [2021-11-22 16:14:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:14:38,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:14:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:14:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:14:39,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:14:39,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565007118] [2021-11-22 16:14:39,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565007118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:14:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576412497] [2021-11-22 16:14:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:14:39,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:14:39,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:14:39,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:14:39,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5185780c-0679-429a-901c-92fa24942d89/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 16:14:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:14:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-22 16:14:39,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:14:39,978 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 [2021-11-22 16:14:40,067 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 [2021-11-22 16:14:40,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,244 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 11 [2021-11-22 16:14:40,437 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-22 16:14:40,437 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 [2021-11-22 16:14:40,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,566 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 [2021-11-22 16:14:40,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,589 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 61 treesize of output 52 [2021-11-22 16:14:40,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,595 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 57 treesize of output 41 [2021-11-22 16:14:40,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,723 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 64 treesize of output 47 [2021-11-22 16:14:40,738 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-11-22 16:14:40,738 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 49 treesize of output 48 [2021-11-22 16:14:40,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:40,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-22 16:14:41,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:41,157 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-22 16:14:41,158 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 66 [2021-11-22 16:14:41,169 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-22 16:14:41,169 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 72 treesize of output 56 [2021-11-22 16:14:41,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 16:14:41,199 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-22 16:14:41,200 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2021-11-22 16:14:41,408 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-22 16:14:41,408 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 122 treesize of output 116 [2021-11-22 16:14:41,430 INFO L354 Elim1Store]: treesize reduction 75, result has 14.8 percent of original size [2021-11-22 16:14:41,430 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 3 new quantified variables, introduced 4 case distinctions, treesize of input 112 treesize of output 98 [2021-11-22 16:14:41,448 INFO L354 Elim1Store]: treesize reduction 63, result has 25.0 percent of original size [2021-11-22 16:14:41,448 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 134 treesize of output 122 [2021-11-22 16:14:42,034 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2021-11-22 16:14:42,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 84 [2021-11-22 16:14:42,041 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-22 16:14:42,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 51 [2021-11-22 16:14:42,232 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 [2021-11-22 16:14:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 16:14:42,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:14:44,746 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (= (let ((.cse1 (+ |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| 4))) (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|) .cse1 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.offset|)))) (store .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|) .cse1 |c_ULTIMATE.start_sll_prepend_#t~mem8#1.base|)))) (store .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_sll_prepend_~new_head~1#1.base|) .cse1 v_DerPreprocessor_6)))) (store .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| v_DerPreprocessor_5))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-22 16:17:25,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int) (|ULTIMATE.start_node_create_~data#1| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (= (let ((.cse1 (+ |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| 4))) (let ((.cse5 (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse9 (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_8))) (store .cse9 .cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse9) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse8 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)))) (.cse2 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse7 (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_7))) (store .cse7 .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse7) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) |c_ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|) .cse1 v_DerPreprocessor_6)))) (store .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| v_DerPreprocessor_5))) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-22 16:17:27,525 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_9 Int) (v_DerPreprocessor_8 Int) (v_DerPreprocessor_7 Int) (|ULTIMATE.start_sll_prepend_~new_head~1#1.offset| Int) (|ULTIMATE.start_node_create_~data#1| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int)) (= (let ((.cse2 (+ |ULTIMATE.start_sll_prepend_~new_head~1#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_node_create_~temp~0#1.offset| 4))) (let ((.cse6 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse10 (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse1 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_8))) (store .cse10 .cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse10) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse9 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |ULTIMATE.start_sll_prepend_~new_head~1#1.offset|)))) (.cse3 (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (let ((.cse8 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse1 0) |c_ULTIMATE.start_node_create_~temp~0#1.offset| v_DerPreprocessor_7))) (store .cse8 .cse2 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| .cse8) |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset|)))))) (store .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse1 v_DerPreprocessor_9) |c_ULTIMATE.start_node_create_~temp~0#1.offset| |ULTIMATE.start_node_create_~data#1|) .cse2 v_DerPreprocessor_6)))) (store .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base| (store (select .cse0 |c_ULTIMATE.start_sll_prepend_~head#1.base|) |c_ULTIMATE.start_sll_prepend_~head#1.offset| v_DerPreprocessor_5))) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-22 16:17:27,564 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 1288 treesize of output 1276 [2021-11-22 16:17:27,577 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 3000 treesize of output 2960