./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 35987657 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-?-3598765 [2022-07-21 10:17:37,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:17:37,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:17:37,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:17:37,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:17:37,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:17:37,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:17:37,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:17:37,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:17:37,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:17:37,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:17:37,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:17:37,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:17:37,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:17:37,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:17:37,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:17:37,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:17:37,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:17:37,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:17:37,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:17:37,389 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:17:37,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:17:37,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:17:37,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:17:37,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:17:37,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:17:37,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:17:37,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:17:37,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:17:37,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:17:37,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:17:37,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:17:37,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:17:37,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:17:37,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:17:37,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:17:37,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:17:37,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:17:37,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:17:37,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:17:37,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:17:37,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:17:37,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:17:37,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:17:37,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:17:37,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:17:37,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:17:37,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:17:37,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:17:37,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:17:37,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:17:37,455 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:17:37,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:17:37,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:17:37,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:17:37,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:17:37,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:17:37,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:17:37,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:17:37,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:17:37,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:17:37,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:17:37,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:17:37,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:17:37,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:17:37,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:17:37,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:17:37,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:17:37,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:17:37,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:17:37,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:17:37,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:17:37,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:17:37,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2022-07-21 10:17:37,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:17:37,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:17:37,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:17:37,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:17:37,809 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:17:37,810 INFO L432 ainManager$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 [2022-07-21 10:17:37,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92edc554f/2c2e48b94f634492aa8c476dc291c17a/FLAGfe16d07b5 [2022-07-21 10:17:38,577 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:17:38,578 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 [2022-07-21 10:17:38,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92edc554f/2c2e48b94f634492aa8c476dc291c17a/FLAGfe16d07b5 [2022-07-21 10:17:38,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92edc554f/2c2e48b94f634492aa8c476dc291c17a [2022-07-21 10:17:38,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:17:38,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:17:38,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:17:38,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:17:38,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:17:38,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:17:38" (1/1) ... [2022-07-21 10:17:38,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9017b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:38, skipping insertion in model container [2022-07-21 10:17:38,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:17:38" (1/1) ... [2022-07-21 10:17:38,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:17:38,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:17:39,953 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] [2022-07-21 10:17:39,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:17:40,008 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:17:40,356 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] [2022-07-21 10:17:40,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:17:40,449 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:17:40,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40 WrapperNode [2022-07-21 10:17:40,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:17:40,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:17:40,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:17:40,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:17:40,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,631 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2787 [2022-07-21 10:17:40,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:17:40,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:17:40,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:17:40,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:17:40,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:17:40,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:17:40,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:17:40,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:17:40,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (1/1) ... [2022-07-21 10:17:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:17:40,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:17:40,832 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) [2022-07-21 10:17:40,857 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 [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:17:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-21 10:17:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-21 10:17:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-21 10:17:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-21 10:17:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-21 10:17:40,875 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-21 10:17:40,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 10:17:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 10:17:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 10:17:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 10:17:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:17:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:17:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 10:17:40,876 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 10:17:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-21 10:17:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-21 10:17:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-21 10:17:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-21 10:17:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:17:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:17:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-21 10:17:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-21 10:17:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:17:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-21 10:17:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-21 10:17:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-21 10:17:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-21 10:17:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 10:17:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 10:17:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:17:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:17:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 10:17:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 10:17:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-21 10:17:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-21 10:17:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:17:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-21 10:17:40,880 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-21 10:17:40,880 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-21 10:17:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-21 10:17:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:17:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-21 10:17:40,881 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-21 10:17:40,881 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-21 10:17:40,882 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-21 10:17:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:17:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:17:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 10:17:40,882 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 10:17:40,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 10:17:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:17:40,883 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-21 10:17:40,884 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-21 10:17:40,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 10:17:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 10:17:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 10:17:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 10:17:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-21 10:17:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-21 10:17:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-21 10:17:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-21 10:17:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:17:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-21 10:17:40,886 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-21 10:17:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:17:40,886 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-21 10:17:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-21 10:17:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-21 10:17:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-21 10:17:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 10:17:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 10:17:40,887 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 10:17:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 10:17:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 10:17:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 10:17:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 10:17:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 10:17:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 10:17:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 10:17:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 10:17:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 10:17:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 10:17:40,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 10:17:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:17:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-21 10:17:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-21 10:17:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-21 10:17:40,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-21 10:17:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-21 10:17:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-21 10:17:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-21 10:17:40,912 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-21 10:17:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 10:17:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:17:40,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:17:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-21 10:17:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-21 10:17:40,914 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-21 10:17:40,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-21 10:17:41,358 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:17:41,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:17:43,429 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:17:43,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:17:43,449 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:17:43,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:17:43 BoogieIcfgContainer [2022-07-21 10:17:43,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:17:43,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:17:43,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:17:43,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:17:43,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:17:38" (1/3) ... [2022-07-21 10:17:43,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d9299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:17:43, skipping insertion in model container [2022-07-21 10:17:43,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:17:40" (2/3) ... [2022-07-21 10:17:43,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227d9299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:17:43, skipping insertion in model container [2022-07-21 10:17:43,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:17:43" (3/3) ... [2022-07-21 10:17:43,460 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2022-07-21 10:17:43,472 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:17:43,473 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:17:43,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:17:43,561 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@320bad1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1528925e [2022-07-21 10:17:43,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:17:43,574 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) [2022-07-21 10:17:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 10:17:43,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:43,587 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] [2022-07-21 10:17:43,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-21 10:17:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:43,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773883779] [2022-07-21 10:17:43,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:43,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 10:17:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:17:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773883779] [2022-07-21 10:17:44,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773883779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:44,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:44,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:17:44,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610992159] [2022-07-21 10:17:44,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:44,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:17:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:17:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:17:44,176 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) [2022-07-21 10:17:45,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:45,334 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-21 10:17:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:17:45,337 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 [2022-07-21 10:17:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:45,365 INFO L225 Difference]: With dead ends: 1950 [2022-07-21 10:17:45,365 INFO L226 Difference]: Without dead ends: 947 [2022-07-21 10:17:45,379 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 [2022-07-21 10:17:45,383 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 1580 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:45,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 1984 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 10:17:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-21 10:17:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-21 10:17:45,500 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) [2022-07-21 10:17:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-21 10:17:45,507 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-21 10:17:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:45,508 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-21 10:17:45,508 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) [2022-07-21 10:17:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-21 10:17:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 10:17:45,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:45,512 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] [2022-07-21 10:17:45,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:17:45,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:45,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-21 10:17:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:45,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380309748] [2022-07-21 10:17:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:45,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 10:17:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:17:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:45,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380309748] [2022-07-21 10:17:45,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380309748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:45,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:45,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:17:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274931741] [2022-07-21 10:17:45,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:45,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:17:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:17:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:17:45,664 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) [2022-07-21 10:17:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:47,137 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-21 10:17:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:17:47,138 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 [2022-07-21 10:17:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:47,146 INFO L225 Difference]: With dead ends: 1859 [2022-07-21 10:17:47,146 INFO L226 Difference]: Without dead ends: 947 [2022-07-21 10:17:47,153 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 [2022-07-21 10:17:47,154 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 372 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:47,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3554 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 10:17:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-21 10:17:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-21 10:17:47,219 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) [2022-07-21 10:17:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-21 10:17:47,226 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-21 10:17:47,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-21 10:17:47,227 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) [2022-07-21 10:17:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-21 10:17:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 10:17:47,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:47,231 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] [2022-07-21 10:17:47,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:17:47,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-21 10:17:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240628774] [2022-07-21 10:17:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:47,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:17:47,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:47,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240628774] [2022-07-21 10:17:47,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240628774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:47,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:47,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:17:47,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203068612] [2022-07-21 10:17:47,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:17:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:17:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:17:47,433 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) [2022-07-21 10:17:49,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:49,441 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-21 10:17:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:17:49,442 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 [2022-07-21 10:17:49,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:49,452 INFO L225 Difference]: With dead ends: 1461 [2022-07-21 10:17:49,453 INFO L226 Difference]: Without dead ends: 1459 [2022-07-21 10:17:49,456 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 [2022-07-21 10:17:49,461 INFO L413 NwaCegarLoop]: 2134 mSDtfsCounter, 1296 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:49,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 5303 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 10:17:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-21 10:17:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-21 10:17:49,526 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) [2022-07-21 10:17:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-21 10:17:49,533 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-21 10:17:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:49,535 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-21 10:17:49,535 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) [2022-07-21 10:17:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-21 10:17:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 10:17:49,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:49,539 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] [2022-07-21 10:17:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:17:49,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-21 10:17:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483513219] [2022-07-21 10:17:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 10:17:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:17:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:49,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483513219] [2022-07-21 10:17:49,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483513219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:49,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:49,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:17:49,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889782161] [2022-07-21 10:17:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:49,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:17:49,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:17:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:17:49,772 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) [2022-07-21 10:17:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:51,967 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-21 10:17:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:17:51,968 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 [2022-07-21 10:17:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:51,977 INFO L225 Difference]: With dead ends: 2375 [2022-07-21 10:17:51,977 INFO L226 Difference]: Without dead ends: 1463 [2022-07-21 10:17:51,982 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 [2022-07-21 10:17:51,982 INFO L413 NwaCegarLoop]: 1807 mSDtfsCounter, 2032 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:51,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 3386 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 10:17:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-21 10:17:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-21 10:17:52,059 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) [2022-07-21 10:17:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-21 10:17:52,064 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-21 10:17:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:52,067 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-21 10:17:52,067 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) [2022-07-21 10:17:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-21 10:17:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 10:17:52,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:52,072 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] [2022-07-21 10:17:52,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:17:52,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-21 10:17:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697579071] [2022-07-21 10:17:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:17:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:17:52,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:52,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697579071] [2022-07-21 10:17:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697579071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:52,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:52,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:17:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619568427] [2022-07-21 10:17:52,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:17:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:17:52,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:17:52,231 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) [2022-07-21 10:17:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:55,306 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-21 10:17:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 10:17:55,306 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 [2022-07-21 10:17:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:55,320 INFO L225 Difference]: With dead ends: 2242 [2022-07-21 10:17:55,320 INFO L226 Difference]: Without dead ends: 2240 [2022-07-21 10:17:55,322 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 [2022-07-21 10:17:55,322 INFO L413 NwaCegarLoop]: 2580 mSDtfsCounter, 2635 mSDsluCounter, 5541 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 819 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2832 SdHoareTripleChecker+Valid, 8121 SdHoareTripleChecker+Invalid, 3486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 819 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:55,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2832 Valid, 8121 Invalid, 3486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [819 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 10:17:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-21 10:17:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-21 10:17:55,393 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) [2022-07-21 10:17:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-21 10:17:55,397 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-21 10:17:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:55,398 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-21 10:17:55,398 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) [2022-07-21 10:17:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-21 10:17:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 10:17:55,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:55,403 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] [2022-07-21 10:17:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:17:55,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:55,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-21 10:17:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:55,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994166250] [2022-07-21 10:17:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:17:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:17:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 10:17:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 10:17:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 10:17:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 10:17:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:55,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994166250] [2022-07-21 10:17:55,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994166250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:55,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:55,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:17:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800762082] [2022-07-21 10:17:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:17:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:17:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:17:55,624 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) [2022-07-21 10:17:56,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:56,545 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-21 10:17:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:17:56,548 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 [2022-07-21 10:17:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:56,553 INFO L225 Difference]: With dead ends: 1896 [2022-07-21 10:17:56,553 INFO L226 Difference]: Without dead ends: 981 [2022-07-21 10:17:56,557 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 [2022-07-21 10:17:56,559 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 1481 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:56,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 1915 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 10:17:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-21 10:17:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-21 10:17:56,640 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) [2022-07-21 10:17:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-21 10:17:56,644 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-21 10:17:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:56,645 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-21 10:17:56,645 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) [2022-07-21 10:17:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-21 10:17:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 10:17:56,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:56,653 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] [2022-07-21 10:17:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:17:56,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-21 10:17:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953479993] [2022-07-21 10:17:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:17:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 10:17:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 10:17:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 10:17:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 10:17:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 10:17:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953479993] [2022-07-21 10:17:56,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953479993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:56,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:56,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:17:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237008663] [2022-07-21 10:17:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:56,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:17:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:17:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:17:56,884 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) [2022-07-21 10:17:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:17:58,784 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-21 10:17:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:17:58,784 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 [2022-07-21 10:17:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:17:58,793 INFO L225 Difference]: With dead ends: 2412 [2022-07-21 10:17:58,793 INFO L226 Difference]: Without dead ends: 1497 [2022-07-21 10:17:58,796 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 [2022-07-21 10:17:58,799 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 2123 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:17:58,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 3506 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 10:17:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-21 10:17:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-21 10:17:58,897 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) [2022-07-21 10:17:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-21 10:17:58,902 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-21 10:17:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:17:58,903 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-21 10:17:58,904 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) [2022-07-21 10:17:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-21 10:17:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 10:17:58,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:17:58,908 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] [2022-07-21 10:17:58,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:17:58,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:17:58,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:17:58,909 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-21 10:17:58,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:17:58,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486638504] [2022-07-21 10:17:58,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:17:58,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:17:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:17:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:17:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:17:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:17:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:17:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:17:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 10:17:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 10:17:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 10:17:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 10:17:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:17:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 10:17:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:17:59,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486638504] [2022-07-21 10:17:59,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486638504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:17:59,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:17:59,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:17:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400688086] [2022-07-21 10:17:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:17:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:17:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:17:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:17:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:17:59,067 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) [2022-07-21 10:18:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:18:00,229 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-21 10:18:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:18:00,230 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 [2022-07-21 10:18:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:18:00,236 INFO L225 Difference]: With dead ends: 1905 [2022-07-21 10:18:00,236 INFO L226 Difference]: Without dead ends: 986 [2022-07-21 10:18:00,240 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 [2022-07-21 10:18:00,241 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 365 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:18:00,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2697 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 10:18:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-21 10:18:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-21 10:18:00,356 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) [2022-07-21 10:18:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-21 10:18:00,361 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-21 10:18:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:18:00,361 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-21 10:18:00,362 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) [2022-07-21 10:18:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-21 10:18:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 10:18:00,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:18:00,367 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] [2022-07-21 10:18:00,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 10:18:00,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:18:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:18:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-21 10:18:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:18:00,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906591457] [2022-07-21 10:18:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:18:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:18:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:18:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:18:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:18:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:18:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:18:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:18:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:18:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 10:18:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 10:18:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 10:18:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 10:18:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 10:18:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:18:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906591457] [2022-07-21 10:18:00,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906591457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:18:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305734613] [2022-07-21 10:18:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:18:00,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:18:00,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:18:00,571 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) [2022-07-21 10:18:00,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 10:18:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:01,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:18:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:18:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 10:18:01,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:18:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 10:18:01,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305734613] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:18:01,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 10:18:01,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2022-07-21 10:18:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782932248] [2022-07-21 10:18:01,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 10:18:01,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 10:18:01,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:18:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 10:18:01,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:18:01,368 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) [2022-07-21 10:18:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:18:06,534 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-21 10:18:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:18:06,534 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 [2022-07-21 10:18:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:18:06,550 INFO L225 Difference]: With dead ends: 3941 [2022-07-21 10:18:06,551 INFO L226 Difference]: Without dead ends: 3022 [2022-07-21 10:18:06,556 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 [2022-07-21 10:18:06,557 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 4282 mSDsluCounter, 7210 mSDsCounter, 0 mSdLazyCounter, 6872 mSolverCounterSat, 1365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 9126 SdHoareTripleChecker+Invalid, 8237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1365 IncrementalHoareTripleChecker+Valid, 6872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:18:06,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 9126 Invalid, 8237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1365 Valid, 6872 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-21 10:18:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-21 10:18:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-21 10:18:06,687 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) [2022-07-21 10:18:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-21 10:18:06,691 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 112 [2022-07-21 10:18:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:18:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-21 10:18:06,692 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) [2022-07-21 10:18:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-21 10:18:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 10:18:06,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:18:06,696 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] [2022-07-21 10:18:06,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 10:18:06,911 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 [2022-07-21 10:18:06,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:18:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:18:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1506190142, now seen corresponding path program 1 times [2022-07-21 10:18:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:18:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704087119] [2022-07-21 10:18:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:18:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:18:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:18:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:18:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 10:18:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 10:18:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:18:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 10:18:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:18:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 10:18:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 10:18:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 10:18:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 10:18:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 10:18:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:18:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 10:18:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:18:07,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704087119] [2022-07-21 10:18:07,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704087119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:18:07,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947468938] [2022-07-21 10:18:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:18:07,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:18:07,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:18:07,273 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) [2022-07-21 10:18:07,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process