./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.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 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:43:09,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:43:09,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:43:09,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:43:09,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:43:09,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:43:09,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:43:09,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:43:09,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:43:09,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:43:09,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:43:09,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:43:09,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:43:09,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:43:09,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:43:09,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:43:09,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:43:09,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:43:09,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:43:09,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:43:09,146 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:43:09,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:43:09,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:43:09,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:43:09,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:43:09,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:43:09,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:43:09,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:43:09,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:43:09,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:43:09,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:43:09,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:43:09,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:43:09,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:43:09,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:43:09,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:43:09,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:43:09,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:43:09,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:43:09,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:43:09,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:43:09,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:43:09,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:43:09,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:43:09,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:43:09,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:43:09,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:43:09,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:43:09,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:43:09,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:43:09,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:43:09,183 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:43:09,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:43:09,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:43:09,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:43:09,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:43:09,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:43:09,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:43:09,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:43:09,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:43:09,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:43:09,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:43:09,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:43:09,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:43:09,199 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:43:09,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:43:09,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:43:09,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-07-12 11:43:09,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:43:09,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:43:09,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:43:09,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:43:09,417 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:43:09,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-12 11:43:09,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bf91504/ef73c6db2aad450e85b33e00bd2f0820/FLAGb1f78a77b [2022-07-12 11:43:09,938 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:43:09,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-12 11:43:09,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bf91504/ef73c6db2aad450e85b33e00bd2f0820/FLAGb1f78a77b [2022-07-12 11:43:10,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bf91504/ef73c6db2aad450e85b33e00bd2f0820 [2022-07-12 11:43:10,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:43:10,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:43:10,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:43:10,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:43:10,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:43:10,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:43:10" (1/1) ... [2022-07-12 11:43:10,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb51cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:10, skipping insertion in model container [2022-07-12 11:43:10,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:43:10" (1/1) ... [2022-07-12 11:43:10,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:43:10,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:43:11,153 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-12 11:43:11,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:43:11,186 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:43:11,372 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-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2022-07-12 11:43:11,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:43:11,445 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:43:11,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11 WrapperNode [2022-07-12 11:43:11,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:43:11,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:43:11,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:43:11,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:43:11,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,600 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2787 [2022-07-12 11:43:11,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:43:11,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:43:11,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:43:11,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:43:11,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:43:11,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:43:11,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:43:11,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:43:11,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (1/1) ... [2022-07-12 11:43:11,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:43:11,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:43:11,804 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) [2022-07-12 11:43:11,810 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 [2022-07-12 11:43:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 11:43:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-12 11:43:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 11:43:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 11:43:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:43:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-12 11:43:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-12 11:43:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-12 11:43:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-12 11:43:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-12 11:43:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-12 11:43:11,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 11:43:11,834 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 11:43:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-12 11:43:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-12 11:43:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 11:43:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 11:43:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 11:43:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 11:43:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-12 11:43:11,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-12 11:43:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-12 11:43:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-12 11:43:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 11:43:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 11:43:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-12 11:43:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-12 11:43:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:43:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-12 11:43:11,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-12 11:43:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-12 11:43:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-12 11:43:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 11:43:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 11:43:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 11:43:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 11:43:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 11:43:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 11:43:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-12 11:43:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-12 11:43:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:43:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-12 11:43:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-12 11:43:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-12 11:43:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-12 11:43:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:43:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-12 11:43:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-12 11:43:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-12 11:43:11,839 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-12 11:43:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:43:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-12 11:43:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-12 11:43:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 11:43:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-12 11:43:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-12 11:43:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-12 11:43:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-12 11:43:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-12 11:43:11,840 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-12 11:43:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-12 11:43:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:43:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-12 11:43:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-12 11:43:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:43:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-12 11:43:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-12 11:43:11,841 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-12 11:43:11,841 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-12 11:43:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-12 11:43:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-12 11:43:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 11:43:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 11:43:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-12 11:43:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-12 11:43:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 11:43:11,842 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 11:43:11,842 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 11:43:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 11:43:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 11:43:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 11:43:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-12 11:43:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-12 11:43:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:43:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-12 11:43:11,843 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-12 11:43:11,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-12 11:43:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-12 11:43:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-12 11:43:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-12 11:43:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-12 11:43:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-12 11:43:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 11:43:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:43:11,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:43:11,844 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-12 11:43:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-12 11:43:11,845 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-12 11:43:11,845 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-12 11:43:12,202 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:43:12,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:43:13,774 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:43:13,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:43:13,786 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 11:43:13,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:43:13 BoogieIcfgContainer [2022-07-12 11:43:13,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:43:13,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:43:13,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:43:13,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:43:13,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:43:10" (1/3) ... [2022-07-12 11:43:13,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cfe875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:43:13, skipping insertion in model container [2022-07-12 11:43:13,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:43:11" (2/3) ... [2022-07-12 11:43:13,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cfe875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:43:13, skipping insertion in model container [2022-07-12 11:43:13,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:43:13" (3/3) ... [2022-07-12 11:43:13,796 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-12 11:43:13,807 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:43:13,807 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:43:13,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:43:13,860 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d31954, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f157db1 [2022-07-12 11:43:13,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:43:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) [2022-07-12 11:43:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 11:43:13,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:13,876 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:13,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-12 11:43:13,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:13,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905862965] [2022-07-12 11:43:13,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:13,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:43:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905862965] [2022-07-12 11:43:14,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905862965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:14,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:14,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722521245] [2022-07-12 11:43:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:14,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:14,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:14,270 INFO L87 Difference]: Start difference. First operand has 968 states, 716 states have (on average 1.4329608938547487) internal successors, (1026), 743 states have internal predecessors, (1026), 207 states have call successors, (207), 43 states have call predecessors, (207), 43 states have return successors, (207), 205 states have call predecessors, (207), 207 states have call successors, (207) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 11:43:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:15,045 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-12 11:43:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:43:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2022-07-12 11:43:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:15,069 INFO L225 Difference]: With dead ends: 1950 [2022-07-12 11:43:15,070 INFO L226 Difference]: Without dead ends: 947 [2022-07-12 11:43:15,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:15,090 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 1580 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:15,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 1980 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:43:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-12 11:43:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-12 11:43:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4183673469387754) internal successors, (973), 710 states have internal predecessors, (973), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-12 11:43:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-12 11:43:15,176 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-12 11:43:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:15,177 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-12 11:43:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-12 11:43:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-12 11:43:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 11:43:15,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:15,181 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:15,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:43:15,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:15,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:15,182 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-12 11:43:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:15,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584898741] [2022-07-12 11:43:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:43:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:15,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:15,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584898741] [2022-07-12 11:43:15,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584898741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:15,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:15,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:43:15,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907987818] [2022-07-12 11:43:15,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:43:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:43:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:15,319 INFO L87 Difference]: Start difference. First operand 929 states and 1371 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 11:43:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:16,651 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-12 11:43:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:43:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-07-12 11:43:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:16,657 INFO L225 Difference]: With dead ends: 1859 [2022-07-12 11:43:16,658 INFO L226 Difference]: Without dead ends: 947 [2022-07-12 11:43:16,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:43:16,662 INFO L413 NwaCegarLoop]: 1329 mSDtfsCounter, 372 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:16,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3546 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 11:43:16,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-12 11:43:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-12 11:43:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 686 states have (on average 1.4169096209912537) internal successors, (972), 710 states have internal predecessors, (972), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-12 11:43:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-12 11:43:16,733 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-12 11:43:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:16,733 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-12 11:43:16,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 11:43:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-12 11:43:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 11:43:16,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:16,735 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:43:16,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-12 11:43:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:16,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103730071] [2022-07-12 11:43:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:16,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:16,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103730071] [2022-07-12 11:43:16,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103730071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:16,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:16,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:43:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711959769] [2022-07-12 11:43:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:43:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:43:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:16,818 INFO L87 Difference]: Start difference. First operand 929 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 11:43:18,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:18,303 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-12 11:43:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:43:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-07-12 11:43:18,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:18,309 INFO L225 Difference]: With dead ends: 1461 [2022-07-12 11:43:18,310 INFO L226 Difference]: Without dead ends: 1459 [2022-07-12 11:43:18,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:43:18,311 INFO L413 NwaCegarLoop]: 2130 mSDtfsCounter, 1296 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 5289 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:18,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 5289 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 11:43:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-12 11:43:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-12 11:43:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 688 states have (on average 1.4156976744186047) internal successors, (974), 712 states have internal predecessors, (974), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-12 11:43:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-12 11:43:18,349 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-12 11:43:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:18,350 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-12 11:43:18,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 11:43:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-12 11:43:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 11:43:18,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:18,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:18,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 11:43:18,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-12 11:43:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:18,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614420751] [2022-07-12 11:43:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:43:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614420751] [2022-07-12 11:43:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614420751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:18,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:18,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:43:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413525410] [2022-07-12 11:43:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:18,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:43:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:43:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:18,439 INFO L87 Difference]: Start difference. First operand 931 states and 1372 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 11:43:19,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:19,746 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-12 11:43:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:43:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-12 11:43:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:19,752 INFO L225 Difference]: With dead ends: 2375 [2022-07-12 11:43:19,752 INFO L226 Difference]: Without dead ends: 1463 [2022-07-12 11:43:19,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:43:19,755 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 2025 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:19,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 3399 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 11:43:19,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-12 11:43:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-12 11:43:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 689 states have (on average 1.4150943396226414) internal successors, (975), 713 states have internal predecessors, (975), 199 states have call successors, (199), 43 states have call predecessors, (199), 43 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2022-07-12 11:43:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-12 11:43:19,791 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-12 11:43:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:19,791 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-12 11:43:19,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 11:43:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-12 11:43:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 11:43:19,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:19,793 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 11:43:19,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-12 11:43:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174449737] [2022-07-12 11:43:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174449737] [2022-07-12 11:43:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174449737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:19,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:19,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:43:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562474311] [2022-07-12 11:43:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:43:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:43:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:43:19,875 INFO L87 Difference]: Start difference. First operand 932 states and 1373 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 11:43:22,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:22,214 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-12 11:43:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:43:22,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-07-12 11:43:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:22,252 INFO L225 Difference]: With dead ends: 2242 [2022-07-12 11:43:22,252 INFO L226 Difference]: Without dead ends: 2240 [2022-07-12 11:43:22,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:43:22,254 INFO L413 NwaCegarLoop]: 2583 mSDtfsCounter, 2635 mSDsluCounter, 5551 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2834 SdHoareTripleChecker+Valid, 8134 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:22,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2834 Valid, 8134 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 11:43:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-12 11:43:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-12 11:43:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 690 states have (on average 1.4144927536231884) internal successors, (976), 713 states have internal predecessors, (976), 200 states have call successors, (200), 43 states have call predecessors, (200), 43 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2022-07-12 11:43:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-12 11:43:22,329 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-12 11:43:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:22,330 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-12 11:43:22,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 11:43:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-12 11:43:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 11:43:22,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:22,345 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 11:43:22,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 11:43:22,346 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-12 11:43:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:22,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569371810] [2022-07-12 11:43:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:43:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:43:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:43:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:43:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 11:43:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:22,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569371810] [2022-07-12 11:43:22,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569371810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:22,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:22,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223654145] [2022-07-12 11:43:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:22,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:22,479 INFO L87 Difference]: Start difference. First operand 934 states and 1376 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:43:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:23,207 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-12 11:43:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:43:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2022-07-12 11:43:23,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:23,211 INFO L225 Difference]: With dead ends: 1896 [2022-07-12 11:43:23,211 INFO L226 Difference]: Without dead ends: 981 [2022-07-12 11:43:23,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:23,215 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1481 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:23,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1919 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 11:43:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-12 11:43:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-12 11:43:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.40625) internal successors, (990), 727 states have internal predecessors, (990), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-12 11:43:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-12 11:43:23,267 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-12 11:43:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:23,268 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-12 11:43:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:43:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-12 11:43:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 11:43:23,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:23,271 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-07-12 11:43:23,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:43:23,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-12 11:43:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288405439] [2022-07-12 11:43:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:43:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:43:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:43:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:43:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 11:43:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:23,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288405439] [2022-07-12 11:43:23,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288405439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:23,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:23,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:43:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592343042] [2022-07-12 11:43:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:43:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:43:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:23,432 INFO L87 Difference]: Start difference. First operand 954 states and 1394 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:43:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:24,869 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-12 11:43:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:43:24,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-12 11:43:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:24,876 INFO L225 Difference]: With dead ends: 2412 [2022-07-12 11:43:24,876 INFO L226 Difference]: Without dead ends: 1497 [2022-07-12 11:43:24,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:43:24,879 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 2123 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:24,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 3506 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 11:43:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-12 11:43:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-12 11:43:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.405367231638418) internal successors, (995), 731 states have internal predecessors, (995), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-12 11:43:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-12 11:43:24,939 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-12 11:43:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:24,940 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-12 11:43:24,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:43:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-12 11:43:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 11:43:24,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:24,945 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-07-12 11:43:24,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:43:24,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-12 11:43:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:24,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059152753] [2022-07-12 11:43:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:43:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:43:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:43:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 11:43:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:25,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059152753] [2022-07-12 11:43:25,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059152753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:43:25,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:43:25,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:43:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953968975] [2022-07-12 11:43:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:43:25,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:43:25,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:43:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:43:25,090 INFO L87 Difference]: Start difference. First operand 958 states and 1399 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:43:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:25,947 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-12 11:43:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:43:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-12 11:43:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:25,968 INFO L225 Difference]: With dead ends: 1905 [2022-07-12 11:43:25,968 INFO L226 Difference]: Without dead ends: 986 [2022-07-12 11:43:25,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:43:25,976 INFO L413 NwaCegarLoop]: 1314 mSDtfsCounter, 365 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:25,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2703 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 11:43:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-12 11:43:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-12 11:43:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 708 states have (on average 1.4011299435028248) internal successors, (992), 731 states have internal predecessors, (992), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-12 11:43:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-12 11:43:26,025 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-12 11:43:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:26,037 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-12 11:43:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:43:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-12 11:43:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 11:43:26,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:26,041 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:43:26,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 11:43:26,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-12 11:43:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:26,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538562288] [2022-07-12 11:43:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:43:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:43:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:43:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:43:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 11:43:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:26,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538562288] [2022-07-12 11:43:26,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538562288] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:43:26,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074700777] [2022-07-12 11:43:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:26,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:43:26,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:43:26,213 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) [2022-07-12 11:43:26,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:43:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 11:43:26,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:43:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 11:43:26,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:43:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 11:43:26,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074700777] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:43:26,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:43:26,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-07-12 11:43:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790786288] [2022-07-12 11:43:26,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:43:26,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:43:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:43:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:43:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:43:26,864 INFO L87 Difference]: Start difference. First operand 958 states and 1396 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-12 11:43:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:43:30,629 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-12 11:43:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:43:30,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2022-07-12 11:43:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:43:30,642 INFO L225 Difference]: With dead ends: 3941 [2022-07-12 11:43:30,642 INFO L226 Difference]: Without dead ends: 3022 [2022-07-12 11:43:30,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:43:30,647 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 4282 mSDsluCounter, 7208 mSDsCounter, 0 mSdLazyCounter, 6872 mSolverCounterSat, 1364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4696 SdHoareTripleChecker+Valid, 9122 SdHoareTripleChecker+Invalid, 8236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1364 IncrementalHoareTripleChecker+Valid, 6872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:43:30,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4696 Valid, 9122 Invalid, 8236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1364 Valid, 6872 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 11:43:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-12 11:43:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-12 11:43:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.4) internal successors, (1001), 738 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 47 states have return successors, (202), 200 states have call predecessors, (202), 202 states have call successors, (202) [2022-07-12 11:43:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-12 11:43:30,741 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 112 [2022-07-12 11:43:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:43:30,742 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-12 11:43:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-12 11:43:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-12 11:43:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 11:43:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:43:30,745 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-12 11:43:30,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:43:30,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:43:30,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:43:30,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:43:30,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1506190142, now seen corresponding path program 1 times [2022-07-12 11:43:30,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:43:30,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938854035] [2022-07-12 11:43:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:30,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:43:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:43:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:43:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:43:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:43:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:43:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:43:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:43:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:43:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:43:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:43:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:43:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 11:43:31,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:43:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938854035] [2022-07-12 11:43:31,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938854035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:43:31,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658901550] [2022-07-12 11:43:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:43:31,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:43:31,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:43:31,300 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) [2022-07-12 11:43:31,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process