./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 04:13:33,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:13:33,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:13:33,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:13:33,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:13:33,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:13:33,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:13:33,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:13:33,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:13:33,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:13:33,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:13:33,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:13:33,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:13:33,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:13:33,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:13:33,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:13:33,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:13:33,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:13:33,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:13:33,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:13:33,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:13:33,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:13:33,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:13:33,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:13:33,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:13:33,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:13:33,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:13:33,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:13:33,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:13:33,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:13:33,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:13:33,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:13:33,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:13:33,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:13:33,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:13:33,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:13:33,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:13:33,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:13:33,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:13:33,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:13:33,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:13:33,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:13:33,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:13:33,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:13:33,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:13:33,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:13:33,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:13:33,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:13:33,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:13:33,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:13:33,935 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:13:33,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:13:33,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:13:33,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:13:33,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:13:33,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:13:33,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:13:33,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:13:33,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:13:33,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:13:33,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:13:33,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:13:33,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:13:33,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:13:33,939 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:13:33,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:13:33,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:13:33,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:13:33,939 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2021-12-18 04:13:34,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:13:34,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:13:34,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:13:34,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:13:34,179 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:13:34,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-18 04:13:34,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4181bad/6261ea0d13c847ef950ac713f026a05e/FLAG94305dcdf [2021-12-18 04:13:34,882 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:13:34,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-18 04:13:34,925 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4181bad/6261ea0d13c847ef950ac713f026a05e/FLAG94305dcdf [2021-12-18 04:13:35,040 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc4181bad/6261ea0d13c847ef950ac713f026a05e [2021-12-18 04:13:35,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:13:35,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:13:35,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:13:35,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:13:35,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:13:35,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:13:35" (1/1) ... [2021-12-18 04:13:35,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520357bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:35, skipping insertion in model container [2021-12-18 04:13:35,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:13:35" (1/1) ... [2021-12-18 04:13:35,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:13:35,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:13:35,737 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-12-18 04:13:36,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:13:36,189 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:13:36,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-12-18 04:13:36,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:13:36,472 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:13:36,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36 WrapperNode [2021-12-18 04:13:36,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:13:36,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:13:36,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:13:36,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:13:36,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,637 INFO L137 Inliner]: procedures = 140, calls = 1066, calls flagged for inlining = 55, calls inlined = 52, statements flattened = 1906 [2021-12-18 04:13:36,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:13:36,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:13:36,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:13:36,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:13:36,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:13:36,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:13:36,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:13:36,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:13:36,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (1/1) ... [2021-12-18 04:13:36,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:13:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:13:36,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 04:13:36,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 04:13:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:13:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2021-12-18 04:13:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2021-12-18 04:13:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:13:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:13:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:13:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:13:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:13:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure write_long_reg [2021-12-18 04:13:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure write_long_reg [2021-12-18 04:13:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-12-18 04:13:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-12-18 04:13:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 04:13:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 04:13:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-18 04:13:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-18 04:13:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-18 04:13:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-18 04:13:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:13:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:13:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-18 04:13:36,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-18 04:13:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:13:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 04:13:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 04:13:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:13:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:13:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:13:36,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:13:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_set_channel [2021-12-18 04:13:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_set_channel [2021-12-18 04:13:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-12-18 04:13:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-12-18 04:13:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:13:36,916 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:13:36,916 INFO L130 BoogieDeclarations]: Found specification of procedure write_short_reg [2021-12-18 04:13:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure write_short_reg [2021-12-18 04:13:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:13:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:13:36,917 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_unregister_device [2021-12-18 04:13:36,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_unregister_device [2021-12-18 04:13:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 04:13:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 04:13:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:13:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:13:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 04:13:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 04:13:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-18 04:13:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-18 04:13:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-18 04:13:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-18 04:13:36,919 INFO L130 BoogieDeclarations]: Found specification of procedure read_short_reg [2021-12-18 04:13:36,919 INFO L138 BoogieDeclarations]: Found implementation of procedure read_short_reg [2021-12-18 04:13:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_filter [2021-12-18 04:13:36,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_filter [2021-12-18 04:13:36,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-18 04:13:36,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-18 04:13:36,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:13:36,922 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-12-18 04:13:36,922 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-12-18 04:13:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:13:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 04:13:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 04:13:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-18 04:13:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-18 04:13:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_tx [2021-12-18 04:13:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_tx [2021-12-18 04:13:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_isr [2021-12-18 04:13:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_isr [2021-12-18 04:13:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_ed [2021-12-18 04:13:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_ed [2021-12-18 04:13:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 04:13:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 04:13:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_free_device [2021-12-18 04:13:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_free_device [2021-12-18 04:13:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:13:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:13:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:13:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:13:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:13:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:13:37,392 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:13:37,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:13:46,507 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:13:55,186 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:13:55,197 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:13:55,197 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-18 04:13:55,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:13:55 BoogieIcfgContainer [2021-12-18 04:13:55,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:13:55,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:13:55,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:13:55,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:13:55,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:13:35" (1/3) ... [2021-12-18 04:13:55,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70822a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:13:55, skipping insertion in model container [2021-12-18 04:13:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:13:36" (2/3) ... [2021-12-18 04:13:55,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70822a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:13:55, skipping insertion in model container [2021-12-18 04:13:55,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:13:55" (3/3) ... [2021-12-18 04:13:55,206 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-18 04:13:55,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:13:55,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:13:55,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:13:55,253 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 04:13:55,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:13:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2021-12-18 04:13:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 04:13:55,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:13:55,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:13:55,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:13:55,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:13:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash -829070918, now seen corresponding path program 1 times [2021-12-18 04:13:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:13:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720023427] [2021-12-18 04:13:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:13:55,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:13:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:13:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:13:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:13:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:13:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:13:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:13:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:13:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 04:13:55,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:13:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720023427] [2021-12-18 04:13:55,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720023427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:13:55,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:13:55,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 04:13:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866155492] [2021-12-18 04:13:55,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:13:55,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 04:13:55,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:13:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 04:13:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 04:13:55,945 INFO L87 Difference]: Start difference. First operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:13:57,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:13:59,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:02,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:04,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:06,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:08,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:11,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:13,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:15,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:17,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:20,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:22,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:14:22,912 INFO L93 Difference]: Finished difference Result 1884 states and 2885 transitions. [2021-12-18 04:14:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:14:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-12-18 04:14:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:14:22,933 INFO L225 Difference]: With dead ends: 1884 [2021-12-18 04:14:22,934 INFO L226 Difference]: Without dead ends: 1244 [2021-12-18 04:14:22,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:14:22,950 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 998 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 308 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:14:22,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2264 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 398 Invalid, 11 Unknown, 0 Unchecked, 26.7s Time] [2021-12-18 04:14:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-12-18 04:14:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1158. [2021-12-18 04:14:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 833 states have (on average 1.3349339735894359) internal successors, (1112), 841 states have internal predecessors, (1112), 264 states have call successors, (264), 61 states have call predecessors, (264), 60 states have return successors, (263), 263 states have call predecessors, (263), 263 states have call successors, (263) [2021-12-18 04:14:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1639 transitions. [2021-12-18 04:14:23,125 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1639 transitions. Word has length 37 [2021-12-18 04:14:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:14:23,125 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1639 transitions. [2021-12-18 04:14:23,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:14:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1639 transitions. [2021-12-18 04:14:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-18 04:14:23,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:14:23,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:14:23,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:14:23,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:14:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:14:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1782236089, now seen corresponding path program 1 times [2021-12-18 04:14:23,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:14:23,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873875385] [2021-12-18 04:14:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:14:23,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:14:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:14:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:14:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:14:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:14:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 04:14:23,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:14:23,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873875385] [2021-12-18 04:14:23,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873875385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:14:23,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:14:23,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:14:23,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562374588] [2021-12-18 04:14:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:14:23,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:14:23,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:14:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:14:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:14:23,472 INFO L87 Difference]: Start difference. First operand 1158 states and 1639 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:14:25,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:27,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:29,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:31,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:32,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:35,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:36,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:38,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:40,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:42,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:45,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:48,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:50,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:52,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:53,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:55,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:57,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:14:59,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:01,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:03,389 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:04,522 INFO L93 Difference]: Finished difference Result 3599 states and 5186 transitions. [2021-12-18 04:15:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:15:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-18 04:15:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:04,541 INFO L225 Difference]: With dead ends: 3599 [2021-12-18 04:15:04,542 INFO L226 Difference]: Without dead ends: 2444 [2021-12-18 04:15:04,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:15:04,550 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 1020 mSDsluCounter, 3138 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 299 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:04,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 4157 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 652 Invalid, 14 Unknown, 0 Unchecked, 40.8s Time] [2021-12-18 04:15:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2021-12-18 04:15:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2307. [2021-12-18 04:15:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 1660 states have (on average 1.3355421686746989) internal successors, (2217), 1682 states have internal predecessors, (2217), 519 states have call successors, (519), 120 states have call predecessors, (519), 127 states have return successors, (566), 520 states have call predecessors, (566), 518 states have call successors, (566) [2021-12-18 04:15:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3302 transitions. [2021-12-18 04:15:04,658 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3302 transitions. Word has length 39 [2021-12-18 04:15:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:04,659 INFO L470 AbstractCegarLoop]: Abstraction has 2307 states and 3302 transitions. [2021-12-18 04:15:04,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:15:04,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3302 transitions. [2021-12-18 04:15:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-18 04:15:04,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:04,729 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:04,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:15:04,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1193096587, now seen corresponding path program 1 times [2021-12-18 04:15:04,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:04,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86088721] [2021-12-18 04:15:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:04,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:15:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:06,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:06,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86088721] [2021-12-18 04:15:06,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86088721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:06,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559676870] [2021-12-18 04:15:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:06,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:06,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:06,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:06,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 04:15:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:07,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3766 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:07,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:08,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:08,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559676870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:08,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:08,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:08,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639448001] [2021-12-18 04:15:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:08,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:08,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:08,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:08,693 INFO L87 Difference]: Start difference. First operand 2307 states and 3302 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:09,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:11,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:13,370 INFO L93 Difference]: Finished difference Result 6921 states and 9926 transitions. [2021-12-18 04:15:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:15:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 229 [2021-12-18 04:15:13,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:13,400 INFO L225 Difference]: With dead ends: 6921 [2021-12-18 04:15:13,400 INFO L226 Difference]: Without dead ends: 4624 [2021-12-18 04:15:13,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:15:13,413 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 760 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:13,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 2943 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-18 04:15:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-12-18 04:15:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4598. [2021-12-18 04:15:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 3307 states have (on average 1.3365588146356213) internal successors, (4420), 3353 states have internal predecessors, (4420), 1034 states have call successors, (1034), 239 states have call predecessors, (1034), 256 states have return successors, (1135), 1037 states have call predecessors, (1135), 1033 states have call successors, (1135) [2021-12-18 04:15:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 6589 transitions. [2021-12-18 04:15:13,611 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 6589 transitions. Word has length 229 [2021-12-18 04:15:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:13,614 INFO L470 AbstractCegarLoop]: Abstraction has 4598 states and 6589 transitions. [2021-12-18 04:15:13,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 6589 transitions. [2021-12-18 04:15:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-18 04:15:13,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:13,622 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:13,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 04:15:13,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:13,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1874664626, now seen corresponding path program 1 times [2021-12-18 04:15:13,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:13,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154278605] [2021-12-18 04:15:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:13,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 04:15:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:15,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:15,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154278605] [2021-12-18 04:15:15,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154278605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:15,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456638489] [2021-12-18 04:15:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:15,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:15,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:15,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 04:15:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3770 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:18,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:18,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456638489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:18,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:18,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:18,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369120599] [2021-12-18 04:15:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:18,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:18,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:18,017 INFO L87 Difference]: Start difference. First operand 4598 states and 6589 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:19,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:21,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:22,784 INFO L93 Difference]: Finished difference Result 9226 states and 13249 transitions. [2021-12-18 04:15:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:15:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2021-12-18 04:15:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:22,811 INFO L225 Difference]: With dead ends: 9226 [2021-12-18 04:15:22,812 INFO L226 Difference]: Without dead ends: 4638 [2021-12-18 04:15:22,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:15:22,833 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 759 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:22,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 1971 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 04:15:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4638 states. [2021-12-18 04:15:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4638 to 4606. [2021-12-18 04:15:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3311 states have (on average 1.3361522198731501) internal successors, (4424), 3361 states have internal predecessors, (4424), 1034 states have call successors, (1034), 239 states have call predecessors, (1034), 260 states have return successors, (1139), 1037 states have call predecessors, (1139), 1033 states have call successors, (1139) [2021-12-18 04:15:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6597 transitions. [2021-12-18 04:15:23,035 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6597 transitions. Word has length 231 [2021-12-18 04:15:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:23,036 INFO L470 AbstractCegarLoop]: Abstraction has 4606 states and 6597 transitions. [2021-12-18 04:15:23,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6597 transitions. [2021-12-18 04:15:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-18 04:15:23,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:23,045 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:23,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 04:15:23,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-18 04:15:23,272 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 683377002, now seen corresponding path program 1 times [2021-12-18 04:15:23,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596904991] [2021-12-18 04:15:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:23,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:23,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:15:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:24,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:24,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596904991] [2021-12-18 04:15:24,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596904991] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:24,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484235915] [2021-12-18 04:15:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:24,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:24,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:24,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:24,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 04:15:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:26,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:26,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:27,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484235915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:27,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:27,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:27,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819683508] [2021-12-18 04:15:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:27,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:27,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:27,459 INFO L87 Difference]: Start difference. First operand 4606 states and 6597 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:29,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:31,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:33,138 INFO L93 Difference]: Finished difference Result 13834 states and 19847 transitions. [2021-12-18 04:15:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:15:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2021-12-18 04:15:33,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:33,193 INFO L225 Difference]: With dead ends: 13834 [2021-12-18 04:15:33,193 INFO L226 Difference]: Without dead ends: 9238 [2021-12-18 04:15:33,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:15:33,213 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 759 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:33,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 3081 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-12-18 04:15:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2021-12-18 04:15:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 9196. [2021-12-18 04:15:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 6609 states have (on average 1.3366621274020276) internal successors, (8834), 6711 states have internal predecessors, (8834), 2064 states have call successors, (2064), 477 states have call predecessors, (2064), 522 states have return successors, (2279), 2071 states have call predecessors, (2279), 2063 states have call successors, (2279) [2021-12-18 04:15:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 13177 transitions. [2021-12-18 04:15:33,614 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 13177 transitions. Word has length 230 [2021-12-18 04:15:33,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:33,615 INFO L470 AbstractCegarLoop]: Abstraction has 9196 states and 13177 transitions. [2021-12-18 04:15:33,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 13177 transitions. [2021-12-18 04:15:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-18 04:15:33,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:33,626 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:33,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 04:15:33,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:33,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2131116005, now seen corresponding path program 1 times [2021-12-18 04:15:33,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:33,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340608827] [2021-12-18 04:15:33,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:33,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 04:15:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:35,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:35,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340608827] [2021-12-18 04:15:35,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340608827] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:35,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985607456] [2021-12-18 04:15:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:35,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:35,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:35,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:35,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 04:15:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:36,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3774 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:36,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:37,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:37,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985607456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:37,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:37,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:37,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583269335] [2021-12-18 04:15:37,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:37,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:37,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:37,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:37,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:37,884 INFO L87 Difference]: Start difference. First operand 9196 states and 13177 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:39,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:41,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:43,394 INFO L93 Difference]: Finished difference Result 18446 states and 26469 transitions. [2021-12-18 04:15:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:15:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 233 [2021-12-18 04:15:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:43,463 INFO L225 Difference]: With dead ends: 18446 [2021-12-18 04:15:43,464 INFO L226 Difference]: Without dead ends: 9260 [2021-12-18 04:15:43,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:15:43,505 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 757 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:43,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 1971 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-12-18 04:15:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2021-12-18 04:15:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 9196. [2021-12-18 04:15:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 6609 states have (on average 1.3366621274020276) internal successors, (8834), 6711 states have internal predecessors, (8834), 2064 states have call successors, (2064), 477 states have call predecessors, (2064), 522 states have return successors, (2255), 2071 states have call predecessors, (2255), 2063 states have call successors, (2255) [2021-12-18 04:15:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 13153 transitions. [2021-12-18 04:15:43,918 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 13153 transitions. Word has length 233 [2021-12-18 04:15:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:43,919 INFO L470 AbstractCegarLoop]: Abstraction has 9196 states and 13153 transitions. [2021-12-18 04:15:43,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 13153 transitions. [2021-12-18 04:15:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-18 04:15:43,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:43,927 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:43,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 04:15:44,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:44,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -149570922, now seen corresponding path program 1 times [2021-12-18 04:15:44,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:44,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21622300] [2021-12-18 04:15:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:44,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:15:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:45,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:45,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21622300] [2021-12-18 04:15:45,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21622300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:45,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4734758] [2021-12-18 04:15:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:45,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:45,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:45,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:45,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 04:15:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:47,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 3768 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:47,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:48,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4734758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:48,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:48,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:48,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748327031] [2021-12-18 04:15:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:48,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:48,164 INFO L87 Difference]: Start difference. First operand 9196 states and 13153 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:49,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:51,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:15:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:15:53,008 INFO L93 Difference]: Finished difference Result 27632 states and 39561 transitions. [2021-12-18 04:15:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:15:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 230 [2021-12-18 04:15:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:15:53,099 INFO L225 Difference]: With dead ends: 27632 [2021-12-18 04:15:53,099 INFO L226 Difference]: Without dead ends: 18446 [2021-12-18 04:15:53,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:15:53,134 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 741 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:15:53,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 3241 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-18 04:15:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18446 states. [2021-12-18 04:15:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18446 to 18308. [2021-12-18 04:15:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18308 states, 13139 states have (on average 1.3386102443108303) internal successors, (17588), 13407 states have internal predecessors, (17588), 4124 states have call successors, (4124), 953 states have call predecessors, (4124), 1044 states have return successors, (4483), 4075 states have call predecessors, (4483), 4123 states have call successors, (4483) [2021-12-18 04:15:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18308 states to 18308 states and 26195 transitions. [2021-12-18 04:15:53,947 INFO L78 Accepts]: Start accepts. Automaton has 18308 states and 26195 transitions. Word has length 230 [2021-12-18 04:15:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:15:53,948 INFO L470 AbstractCegarLoop]: Abstraction has 18308 states and 26195 transitions. [2021-12-18 04:15:53,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18308 states and 26195 transitions. [2021-12-18 04:15:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-18 04:15:53,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:15:53,965 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:15:54,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 04:15:54,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:54,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:15:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:15:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2071322685, now seen corresponding path program 1 times [2021-12-18 04:15:54,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:15:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377638243] [2021-12-18 04:15:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:54,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:15:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:15:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:15:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:15:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:54,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:15:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:15:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:15:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:15:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:15:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:15:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:15:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:15:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:15:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:15:55,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:15:55,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377638243] [2021-12-18 04:15:55,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377638243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:15:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122659917] [2021-12-18 04:15:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:15:55,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:15:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:15:55,494 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:15:55,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 04:15:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:15:57,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 3772 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:15:57,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:15:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:15:58,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:15:58,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122659917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:15:58,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:15:58,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:15:58,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308724089] [2021-12-18 04:15:58,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:15:58,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:15:58,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:15:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:15:58,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:15:58,492 INFO L87 Difference]: Start difference. First operand 18308 states and 26195 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:15:59,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:01,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:16:03,496 INFO L93 Difference]: Finished difference Result 27622 states and 39591 transitions. [2021-12-18 04:16:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:16:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 232 [2021-12-18 04:16:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:16:03,570 INFO L225 Difference]: With dead ends: 27622 [2021-12-18 04:16:03,570 INFO L226 Difference]: Without dead ends: 18372 [2021-12-18 04:16:03,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:16:03,601 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 758 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:16:03,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 1971 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 04:16:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2021-12-18 04:16:04,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 18244. [2021-12-18 04:16:04,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18244 states, 13107 states have (on average 1.338216220340276) internal successors, (17540), 13359 states have internal predecessors, (17540), 4108 states have call successors, (4108), 953 states have call predecessors, (4108), 1028 states have return successors, (4411), 4059 states have call predecessors, (4411), 4107 states have call successors, (4411) [2021-12-18 04:16:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18244 states to 18244 states and 26059 transitions. [2021-12-18 04:16:04,288 INFO L78 Accepts]: Start accepts. Automaton has 18244 states and 26059 transitions. Word has length 232 [2021-12-18 04:16:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:16:04,288 INFO L470 AbstractCegarLoop]: Abstraction has 18244 states and 26059 transitions. [2021-12-18 04:16:04,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18244 states and 26059 transitions. [2021-12-18 04:16:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-18 04:16:04,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:16:04,301 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:16:04,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 04:16:04,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:04,527 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:16:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:16:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1958457725, now seen corresponding path program 1 times [2021-12-18 04:16:04,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:16:04,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581438918] [2021-12-18 04:16:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:04,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:16:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:04,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:16:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:16:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:16:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:16:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:16:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:16:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:16:05,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:16:05,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581438918] [2021-12-18 04:16:05,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581438918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:05,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055597467] [2021-12-18 04:16:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:05,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:16:05,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:16:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 04:16:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:07,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:16:07,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:16:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:16:08,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:16:08,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055597467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:16:08,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:16:08,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:16:08,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388405550] [2021-12-18 04:16:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:16:08,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:16:08,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:16:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:16:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:16:08,940 INFO L87 Difference]: Start difference. First operand 18244 states and 26059 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:10,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:12,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:16:14,617 INFO L93 Difference]: Finished difference Result 54848 states and 78459 transitions. [2021-12-18 04:16:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:16:14,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 228 [2021-12-18 04:16:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:16:14,874 INFO L225 Difference]: With dead ends: 54848 [2021-12-18 04:16:14,874 INFO L226 Difference]: Without dead ends: 36614 [2021-12-18 04:16:14,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:16:14,931 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 761 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:16:14,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 2943 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-18 04:16:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36614 states. [2021-12-18 04:16:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36614 to 36476. [2021-12-18 04:16:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36476 states, 26203 states have (on average 1.3383200396901118) internal successors, (35068), 26711 states have internal predecessors, (35068), 8212 states have call successors, (8212), 1905 states have call predecessors, (8212), 2060 states have return successors, (8819), 8115 states have call predecessors, (8819), 8211 states have call successors, (8819) [2021-12-18 04:16:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36476 states to 36476 states and 52099 transitions. [2021-12-18 04:16:16,227 INFO L78 Accepts]: Start accepts. Automaton has 36476 states and 52099 transitions. Word has length 228 [2021-12-18 04:16:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:16:16,228 INFO L470 AbstractCegarLoop]: Abstraction has 36476 states and 52099 transitions. [2021-12-18 04:16:16,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 36476 states and 52099 transitions. [2021-12-18 04:16:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-18 04:16:16,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:16:16,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:16:16,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 04:16:16,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:16,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:16:16,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:16:16,468 INFO L85 PathProgramCache]: Analyzing trace with hash -177428610, now seen corresponding path program 1 times [2021-12-18 04:16:16,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:16:16,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777669955] [2021-12-18 04:16:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:16,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:16:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:16:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:16:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:16:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:16:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:16:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:16:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-18 04:16:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:16:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777669955] [2021-12-18 04:16:17,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777669955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897809294] [2021-12-18 04:16:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:17,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:16:17,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:16:17,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 04:16:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:20,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 3762 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:16:20,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:16:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:16:21,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:16:21,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897809294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:16:21,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:16:21,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-18 04:16:21,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60395465] [2021-12-18 04:16:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:16:21,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:16:21,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:16:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:16:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-18 04:16:21,452 INFO L87 Difference]: Start difference. First operand 36476 states and 52099 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:22,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:24,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:27,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:16:27,774 INFO L93 Difference]: Finished difference Result 102568 states and 146275 transitions. [2021-12-18 04:16:27,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:16:27,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 227 [2021-12-18 04:16:27,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:16:28,106 INFO L225 Difference]: With dead ends: 102568 [2021-12-18 04:16:28,107 INFO L226 Difference]: Without dead ends: 65660 [2021-12-18 04:16:28,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-18 04:16:28,216 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 743 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:16:28,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 3476 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-18 04:16:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65660 states. [2021-12-18 04:16:30,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65660 to 65242. [2021-12-18 04:16:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65242 states, 46754 states have (on average 1.335671814176327) internal successors, (62448), 47814 states have internal predecessors, (62448), 14690 states have call successors, (14690), 3494 states have call predecessors, (14690), 3797 states have return successors, (15767), 14381 states have call predecessors, (15767), 14689 states have call successors, (15767) [2021-12-18 04:16:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65242 states to 65242 states and 92905 transitions. [2021-12-18 04:16:30,813 INFO L78 Accepts]: Start accepts. Automaton has 65242 states and 92905 transitions. Word has length 227 [2021-12-18 04:16:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:16:30,814 INFO L470 AbstractCegarLoop]: Abstraction has 65242 states and 92905 transitions. [2021-12-18 04:16:30,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 04:16:30,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65242 states and 92905 transitions. [2021-12-18 04:16:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-18 04:16:30,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:16:30,837 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:16:30,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 04:16:31,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 04:16:31,051 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:16:31,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:16:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1072809895, now seen corresponding path program 1 times [2021-12-18 04:16:31,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:16:31,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694899027] [2021-12-18 04:16:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:31,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:16:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:16:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:16:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:16:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:16:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:16:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:16:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 04:16:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 04:16:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:16:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:16:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:16:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 04:16:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:16:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-18 04:16:32,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:16:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694899027] [2021-12-18 04:16:32,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694899027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:16:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366965275] [2021-12-18 04:16:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:16:32,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:16:32,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:16:32,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:16:32,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 04:16:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:16:34,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 3821 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:16:34,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:16:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 04:16:36,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:16:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-18 04:16:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366965275] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:16:37,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:16:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 26 [2021-12-18 04:16:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106864399] [2021-12-18 04:16:37,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:16:37,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-18 04:16:37,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:16:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-18 04:16:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-12-18 04:16:37,163 INFO L87 Difference]: Start difference. First operand 65242 states and 92905 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) [2021-12-18 04:16:39,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:41,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:44,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:49,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:51,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:53,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:55,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:16:58,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:00,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:02,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:03,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:06,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:08,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:10,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:12,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:15,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:17,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:19,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:21,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:23,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:25,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:27,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:30,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:34,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:37,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:17:43,901 INFO L93 Difference]: Finished difference Result 187584 states and 280049 transitions. [2021-12-18 04:17:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-18 04:17:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) Word has length 240 [2021-12-18 04:17:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:17:44,655 INFO L225 Difference]: With dead ends: 187584 [2021-12-18 04:17:44,656 INFO L226 Difference]: Without dead ends: 121372 [2021-12-18 04:17:45,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=654, Invalid=3506, Unknown=0, NotChecked=0, Total=4160 [2021-12-18 04:17:45,084 INFO L933 BasicCegarLoop]: 1208 mSDtfsCounter, 2127 mSDsluCounter, 14016 mSDsCounter, 0 mSdLazyCounter, 4704 mSolverCounterSat, 751 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 15224 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 4704 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:17:45,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 15224 Invalid, 5472 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [751 Valid, 4704 Invalid, 17 Unknown, 0 Unchecked, 61.2s Time] [2021-12-18 04:17:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121372 states. [2021-12-18 04:17:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121372 to 113606. [2021-12-18 04:17:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113606 states, 81795 states have (on average 1.3313038694296717) internal successors, (108894), 84227 states have internal predecessors, (108894), 24654 states have call successors, (24654), 6099 states have call predecessors, (24654), 7156 states have return successors, (28059), 24001 states have call predecessors, (28059), 24653 states have call successors, (28059) [2021-12-18 04:17:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113606 states to 113606 states and 161607 transitions. [2021-12-18 04:17:49,531 INFO L78 Accepts]: Start accepts. Automaton has 113606 states and 161607 transitions. Word has length 240 [2021-12-18 04:17:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:17:49,531 INFO L470 AbstractCegarLoop]: Abstraction has 113606 states and 161607 transitions. [2021-12-18 04:17:49,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (57), 10 states have call predecessors, (57), 7 states have call successors, (57) [2021-12-18 04:17:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 113606 states and 161607 transitions. [2021-12-18 04:17:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 04:17:49,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:17:49,575 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:17:49,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 04:17:49,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:17:49,799 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:17:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:17:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash -920937652, now seen corresponding path program 1 times [2021-12-18 04:17:49,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:17:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919559328] [2021-12-18 04:17:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:17:49,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:17:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:17:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:17:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:17:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:17:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 04:17:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:17:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:17:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:17:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:17:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:17:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 04:17:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:17:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:17:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:17:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:17:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:17:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:17:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:17:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:17:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:17:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 04:17:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 04:17:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:17:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 04:17:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 04:17:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:17:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:17:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-18 04:17:51,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:17:51,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919559328] [2021-12-18 04:17:51,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919559328] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:17:51,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474202759] [2021-12-18 04:17:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:17:51,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:17:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:17:51,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:17:51,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 04:17:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:17:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3883 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:17:54,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:17:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-18 04:17:55,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:17:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-12-18 04:17:56,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474202759] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:17:56,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:17:56,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 28 [2021-12-18 04:17:56,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377877952] [2021-12-18 04:17:56,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:17:56,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-18 04:17:56,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:17:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-18 04:17:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-12-18 04:17:56,568 INFO L87 Difference]: Start difference. First operand 113606 states and 161607 transitions. Second operand has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-12-18 04:17:57,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:17:59,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:01,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:03,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:05,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:09,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:15,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:17,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:19,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:21,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:23,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:25,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:27,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:29,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:32,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:34,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:36,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:38,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:41,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:44,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:46,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:54,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:18:58,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:00,281 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:12,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:14,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:16,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:18,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:20,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:27,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:19:32,869 INFO L93 Difference]: Finished difference Result 263064 states and 389839 transitions. [2021-12-18 04:19:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-12-18 04:19:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) Word has length 245 [2021-12-18 04:19:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:19:33,699 INFO L225 Difference]: With dead ends: 263064 [2021-12-18 04:19:33,699 INFO L226 Difference]: Without dead ends: 148488 [2021-12-18 04:19:34,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 561 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4922 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1760, Invalid=12760, Unknown=0, NotChecked=0, Total=14520 [2021-12-18 04:19:34,145 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 4728 mSDsluCounter, 21861 mSDsCounter, 0 mSdLazyCounter, 9922 mSolverCounterSat, 1822 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 23402 SdHoareTripleChecker+Invalid, 11769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 9922 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:19:34,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5059 Valid, 23402 Invalid, 11769 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1822 Valid, 9922 Invalid, 25 Unknown, 0 Unchecked, 84.7s Time] [2021-12-18 04:19:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148488 states. [2021-12-18 04:19:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148488 to 139006. [2021-12-18 04:19:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139006 states, 100401 states have (on average 1.3309827591358652) internal successors, (133632), 103507 states have internal predecessors, (133632), 29854 states have call successors, (29854), 7423 states have call predecessors, (29854), 8750 states have return successors, (34031), 28949 states have call predecessors, (34031), 29853 states have call successors, (34031) [2021-12-18 04:19:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139006 states to 139006 states and 197517 transitions. [2021-12-18 04:19:39,102 INFO L78 Accepts]: Start accepts. Automaton has 139006 states and 197517 transitions. Word has length 245 [2021-12-18 04:19:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:19:39,102 INFO L470 AbstractCegarLoop]: Abstraction has 139006 states and 197517 transitions. [2021-12-18 04:19:39,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.964285714285714) internal successors, (251), 19 states have internal predecessors, (251), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-12-18 04:19:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 139006 states and 197517 transitions. [2021-12-18 04:19:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-18 04:19:39,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:19:39,139 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:19:39,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 04:19:39,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-18 04:19:39,340 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:19:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:19:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1706320960, now seen corresponding path program 1 times [2021-12-18 04:19:39,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:19:39,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687842588] [2021-12-18 04:19:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:19:39,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:19:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:19:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:19:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:19:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:19:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 04:19:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:19:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:19:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 04:19:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:19:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:19:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 04:19:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:19:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 04:19:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:19:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:19:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 04:19:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:19:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 04:19:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:19:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:19:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 04:19:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 04:19:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:19:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 04:19:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 04:19:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 04:19:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:19:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 9 proven. 67 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 04:19:41,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:19:41,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687842588] [2021-12-18 04:19:41,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687842588] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:19:41,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363747260] [2021-12-18 04:19:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:19:41,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:19:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:19:41,150 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:19:41,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 04:19:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:19:43,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 3945 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:19:43,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:19:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-18 04:19:45,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:19:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-12-18 04:19:46,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363747260] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:19:46,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:19:46,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 29 [2021-12-18 04:19:46,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082914418] [2021-12-18 04:19:46,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:19:46,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 04:19:46,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:19:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 04:19:46,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2021-12-18 04:19:46,617 INFO L87 Difference]: Start difference. First operand 139006 states and 197517 transitions. Second operand has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-12-18 04:19:48,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:50,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:52,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:54,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:56,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:19:58,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:02,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:07,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:10,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:12,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:18,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:19,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:22,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:24,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:27,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:30,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:33,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:35,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:39,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:41,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:44,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:20:46,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:21:02,595 INFO L93 Difference]: Finished difference Result 298698 states and 439921 transitions. [2021-12-18 04:21:02,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-12-18 04:21:02,596 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) Word has length 250 [2021-12-18 04:21:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:21:03,494 INFO L225 Difference]: With dead ends: 298698 [2021-12-18 04:21:03,494 INFO L226 Difference]: Without dead ends: 158722 [2021-12-18 04:21:03,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5474 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1829, Invalid=14427, Unknown=0, NotChecked=0, Total=16256 [2021-12-18 04:21:03,999 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 5163 mSDsluCounter, 19507 mSDsCounter, 0 mSdLazyCounter, 7926 mSolverCounterSat, 2671 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 21084 SdHoareTripleChecker+Invalid, 10615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2671 IncrementalHoareTripleChecker+Valid, 7926 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:21:04,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5516 Valid, 21084 Invalid, 10615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2671 Valid, 7926 Invalid, 18 Unknown, 0 Unchecked, 63.0s Time] [2021-12-18 04:21:04,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158722 states. [2021-12-18 04:21:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158722 to 122038. [2021-12-18 04:21:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122038 states, 88346 states have (on average 1.3259909899712494) internal successors, (117146), 91002 states have internal predecessors, (117146), 25862 states have call successors, (25862), 6684 states have call predecessors, (25862), 7829 states have return successors, (29341), 25097 states have call predecessors, (29341), 25861 states have call successors, (29341) [2021-12-18 04:21:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122038 states to 122038 states and 172349 transitions. [2021-12-18 04:21:08,595 INFO L78 Accepts]: Start accepts. Automaton has 122038 states and 172349 transitions. Word has length 250 [2021-12-18 04:21:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:21:08,595 INFO L470 AbstractCegarLoop]: Abstraction has 122038 states and 172349 transitions. [2021-12-18 04:21:08,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.758620689655173) internal successors, (254), 20 states have internal predecessors, (254), 8 states have call successors, (63), 8 states have call predecessors, (63), 8 states have return successors, (57), 10 states have call predecessors, (57), 8 states have call successors, (57) [2021-12-18 04:21:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 122038 states and 172349 transitions. [2021-12-18 04:21:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-18 04:21:08,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:21:08,645 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:21:08,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-18 04:21:08,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-18 04:21:08,858 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:21:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:21:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1593917350, now seen corresponding path program 1 times [2021-12-18 04:21:08,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:21:08,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523128887] [2021-12-18 04:21:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:21:08,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:21:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:21:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:21:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:21:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:21:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 04:21:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 04:21:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:09,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:21:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:21:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:21:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:21:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 04:21:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:21:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:21:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:21:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:21:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 04:21:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:21:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:21:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:21:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:21:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 04:21:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 04:21:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:21:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 04:21:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 04:21:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 04:21:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:21:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 11 proven. 88 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-18 04:21:10,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:21:10,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523128887] [2021-12-18 04:21:10,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523128887] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:21:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941480420] [2021-12-18 04:21:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:21:10,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:21:10,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:21:10,589 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 04:21:10,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 04:21:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:21:13,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 4007 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 04:21:13,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:21:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-12-18 04:21:15,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:21:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-12-18 04:21:16,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941480420] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 04:21:16,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-18 04:21:16,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16, 6] total 26 [2021-12-18 04:21:16,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735155961] [2021-12-18 04:21:16,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:21:16,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 04:21:16,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:21:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 04:21:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-12-18 04:21:16,382 INFO L87 Difference]: Start difference. First operand 122038 states and 172349 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 04:21:18,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:20,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:22,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:21:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:21:29,366 INFO L93 Difference]: Finished difference Result 297202 states and 420195 transitions. [2021-12-18 04:21:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 04:21:29,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) Word has length 254 [2021-12-18 04:21:29,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:21:30,387 INFO L225 Difference]: With dead ends: 297202 [2021-12-18 04:21:30,387 INFO L226 Difference]: Without dead ends: 178234 [2021-12-18 04:21:30,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2021-12-18 04:21:30,700 INFO L933 BasicCegarLoop]: 1205 mSDtfsCounter, 864 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 5971 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-18 04:21:30,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 5971 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 996 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2021-12-18 04:21:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178234 states. [2021-12-18 04:21:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178234 to 177382. [2021-12-18 04:21:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177382 states, 128312 states have (on average 1.3255969823555085) internal successors, (170090), 132282 states have internal predecessors, (170090), 37588 states have call successors, (37588), 9738 states have call predecessors, (37588), 11481 states have return successors, (42983), 36443 states have call predecessors, (42983), 37587 states have call successors, (42983) [2021-12-18 04:21:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177382 states to 177382 states and 250661 transitions. [2021-12-18 04:21:36,984 INFO L78 Accepts]: Start accepts. Automaton has 177382 states and 250661 transitions. Word has length 254 [2021-12-18 04:21:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:21:36,985 INFO L470 AbstractCegarLoop]: Abstraction has 177382 states and 250661 transitions. [2021-12-18 04:21:36,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 5 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-18 04:21:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 177382 states and 250661 transitions.