./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.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.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 6e17534f736f8f0727327ccce9421d9a9e89801b3a6ab68095fc479caa060175 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:00:53,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:00:53,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:00:53,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:00:53,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:00:53,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:00:53,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:00:53,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:00:53,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:00:53,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:00:53,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:00:53,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:00:53,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:00:53,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:00:53,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:00:53,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:00:53,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:00:53,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:00:53,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:00:53,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:00:53,581 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:00:53,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:00:53,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:00:53,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:00:53,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:00:53,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:00:53,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:00:53,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:00:53,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:00:53,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:00:53,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:00:53,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:00:53,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:00:53,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:00:53,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:00:53,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:00:53,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:00:53,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:00:53,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:00:53,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:00:53,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:00:53,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:00:53,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:00:53,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:00:53,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:00:53,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:00:53,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:00:53,637 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:00:53,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:00:53,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:00:53,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:00:53,639 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:00:53,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:00:53,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:00:53,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:00:53,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:00:53,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:00:53,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:00:53,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:00:53,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:00:53,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:00:53,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:00:53,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:00:53,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:00:53,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:00:53,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:00:53,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:00:53,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:00:53,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:00:53,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:00:53,643 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:00:53,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:00:53,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:00:53,644 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e17534f736f8f0727327ccce9421d9a9e89801b3a6ab68095fc479caa060175 [2022-07-22 23:00:53,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:00:53,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:00:53,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:00:53,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:00:53,923 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:00:53,924 INFO L432 ainManager$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.i [2022-07-22 23:00:53,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9288f4b/fc11990633f743c89d97cb45a6560023/FLAGcc58df1fb [2022-07-22 23:00:54,737 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:00:54,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac.i [2022-07-22 23:00:54,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9288f4b/fc11990633f743c89d97cb45a6560023/FLAGcc58df1fb [2022-07-22 23:00:54,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9288f4b/fc11990633f743c89d97cb45a6560023 [2022-07-22 23:00:54,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:00:54,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:00:54,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:00:54,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:00:54,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:00:54,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:54" (1/1) ... [2022-07-22 23:00:54,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d9e5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:54, skipping insertion in model container [2022-07-22 23:00:54,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:54" (1/1) ... [2022-07-22 23:00:54,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:00:54,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:00:56,003 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.i[202834,202847] [2022-07-22 23:00:56,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:00:56,042 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:00:56,300 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.i[202834,202847] [2022-07-22 23:00:56,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:00:56,388 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:00:56,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56 WrapperNode [2022-07-22 23:00:56,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:00:56,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:00:56,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:00:56,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:00:56,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,566 INFO L137 Inliner]: procedures = 157, calls = 810, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2783 [2022-07-22 23:00:56,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:00:56,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:00:56,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:00:56,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:00:56,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:00:56,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:00:56,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:00:56,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:00:56,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (1/1) ... [2022-07-22 23:00:56,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:00:56,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:00:56,737 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) [2022-07-22 23:00:56,761 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 [2022-07-22 23:00:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:00:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-22 23:00:56,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:00:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:00:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:00:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-22 23:00:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-22 23:00:56,784 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-22 23:00:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-22 23:00:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-07-22 23:00:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-07-22 23:00:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:00:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:00:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:00:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:00:56,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:00:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:00:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:00:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:00:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-07-22 23:00:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-07-22 23:00:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-22 23:00:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-22 23:00:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:00:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:00:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-07-22 23:00:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-07-22 23:00:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:00:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-07-22 23:00:56,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-07-22 23:00:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-22 23:00:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-22 23:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-22 23:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:00:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-07-22 23:00:56,840 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-07-22 23:00:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-22 23:00:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-07-22 23:00:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:00:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-22 23:00:56,841 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-22 23:00:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:00:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-22 23:00:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-07-22 23:00:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-07-22 23:00:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-07-22 23:00:56,842 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-07-22 23:00:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:00:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-22 23:00:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-22 23:00:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:00:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-07-22 23:00:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-07-22 23:00:56,843 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-07-22 23:00:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-07-22 23:00:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:00:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:00:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:00:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:00:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:00:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:00:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-22 23:00:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:00:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:00:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:00:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-22 23:00:56,847 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-22 23:00:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 23:00:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 23:00:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-22 23:00:56,848 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-22 23:00:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-22 23:00:56,849 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-22 23:00:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:00:56,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:00:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:00:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-07-22 23:00:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-07-22 23:00:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-22 23:00:56,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-22 23:00:57,287 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:00:57,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:00:58,970 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:00:58,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:00:58,999 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:00:59,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:59 BoogieIcfgContainer [2022-07-22 23:00:59,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:00:59,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:00:59,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:00:59,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:00:59,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:00:54" (1/3) ... [2022-07-22 23:00:59,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301791ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:59, skipping insertion in model container [2022-07-22 23:00:59,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:56" (2/3) ... [2022-07-22 23:00:59,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301791ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:59, skipping insertion in model container [2022-07-22 23:00:59,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:59" (3/3) ... [2022-07-22 23:00:59,024 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac.i [2022-07-22 23:00:59,036 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:00:59,036 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:00:59,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:00:59,118 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@7dd7c821, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e69800c [2022-07-22 23:00:59,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:00:59,127 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) [2022-07-22 23:00:59,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 23:00:59,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:59,140 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] [2022-07-22 23:00:59,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -579474216, now seen corresponding path program 1 times [2022-07-22 23:00:59,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:59,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59113273] [2022-07-22 23:00:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:59,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:00:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:00:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:00:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:00:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:00:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:00:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:00:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:00:59,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59113273] [2022-07-22 23:00:59,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59113273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:00:59,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:00:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:00:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820832852] [2022-07-22 23:00:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:00:59,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:00:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:00:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:00:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:00:59,591 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) [2022-07-22 23:01:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:00,566 INFO L93 Difference]: Finished difference Result 1950 states and 2923 transitions. [2022-07-22 23:01:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:00,569 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 [2022-07-22 23:01:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:00,587 INFO L225 Difference]: With dead ends: 1950 [2022-07-22 23:01:00,587 INFO L226 Difference]: Without dead ends: 947 [2022-07-22 23:01:00,596 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 [2022-07-22 23:01:00,599 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1573 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:00,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1990 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:01:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-22 23:01:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-22 23:01:00,713 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) [2022-07-22 23:01:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1371 transitions. [2022-07-22 23:01:00,721 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1371 transitions. Word has length 59 [2022-07-22 23:01:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:00,722 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1371 transitions. [2022-07-22 23:01:00,722 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) [2022-07-22 23:01:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1371 transitions. [2022-07-22 23:01:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 23:01:00,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:00,727 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] [2022-07-22 23:01:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:01:00,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash -155827494, now seen corresponding path program 1 times [2022-07-22 23:01:00,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:00,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995692753] [2022-07-22 23:01:00,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:00,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:01:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:01:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995692753] [2022-07-22 23:01:00,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995692753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:00,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:00,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201460042] [2022-07-22 23:01:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:00,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:00,894 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) [2022-07-22 23:01:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:02,263 INFO L93 Difference]: Finished difference Result 1859 states and 2750 transitions. [2022-07-22 23:01:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:01:02,263 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 [2022-07-22 23:01:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:02,269 INFO L225 Difference]: With dead ends: 1859 [2022-07-22 23:01:02,269 INFO L226 Difference]: Without dead ends: 947 [2022-07-22 23:01:02,271 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 [2022-07-22 23:01:02,273 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 372 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3538 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 [2022-07-22 23:01:02,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3538 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:01:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-07-22 23:01:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 929. [2022-07-22 23:01:02,314 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) [2022-07-22 23:01:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1370 transitions. [2022-07-22 23:01:02,321 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1370 transitions. Word has length 59 [2022-07-22 23:01:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:02,321 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1370 transitions. [2022-07-22 23:01:02,321 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) [2022-07-22 23:01:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1370 transitions. [2022-07-22 23:01:02,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 23:01:02,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:02,324 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] [2022-07-22 23:01:02,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:01:02,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1779924711, now seen corresponding path program 1 times [2022-07-22 23:01:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:02,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844348928] [2022-07-22 23:01:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:02,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:01:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:02,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844348928] [2022-07-22 23:01:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844348928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:02,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:02,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353154980] [2022-07-22 23:01:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:02,477 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) [2022-07-22 23:01:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:04,267 INFO L93 Difference]: Finished difference Result 1461 states and 2231 transitions. [2022-07-22 23:01:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:01:04,267 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 [2022-07-22 23:01:04,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:04,276 INFO L225 Difference]: With dead ends: 1461 [2022-07-22 23:01:04,276 INFO L226 Difference]: Without dead ends: 1459 [2022-07-22 23:01:04,277 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 [2022-07-22 23:01:04,278 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 1296 mSDsluCounter, 3189 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 5333 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:04,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 5333 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 23:01:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2022-07-22 23:01:04,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 931. [2022-07-22 23:01:04,377 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) [2022-07-22 23:01:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1372 transitions. [2022-07-22 23:01:04,382 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1372 transitions. Word has length 62 [2022-07-22 23:01:04,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:04,384 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1372 transitions. [2022-07-22 23:01:04,384 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) [2022-07-22 23:01:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1372 transitions. [2022-07-22 23:01:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 23:01:04,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:04,387 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] [2022-07-22 23:01:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:01:04,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2124530077, now seen corresponding path program 1 times [2022-07-22 23:01:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531001389] [2022-07-22 23:01:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:01:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:01:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531001389] [2022-07-22 23:01:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531001389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:04,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691864773] [2022-07-22 23:01:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:04,580 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) [2022-07-22 23:01:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:06,329 INFO L93 Difference]: Finished difference Result 2375 states and 3581 transitions. [2022-07-22 23:01:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:01:06,329 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 [2022-07-22 23:01:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:06,338 INFO L225 Difference]: With dead ends: 2375 [2022-07-22 23:01:06,338 INFO L226 Difference]: Without dead ends: 1463 [2022-07-22 23:01:06,343 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 [2022-07-22 23:01:06,350 INFO L413 NwaCegarLoop]: 1816 mSDtfsCounter, 2025 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:06,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 3403 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:01:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-22 23:01:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 932. [2022-07-22 23:01:06,437 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) [2022-07-22 23:01:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1373 transitions. [2022-07-22 23:01:06,441 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1373 transitions. Word has length 72 [2022-07-22 23:01:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:06,443 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1373 transitions. [2022-07-22 23:01:06,444 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) [2022-07-22 23:01:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1373 transitions. [2022-07-22 23:01:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 23:01:06,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:06,448 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] [2022-07-22 23:01:06,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:01:06,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash -45216834, now seen corresponding path program 1 times [2022-07-22 23:01:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:06,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716211911] [2022-07-22 23:01:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:06,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 23:01:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716211911] [2022-07-22 23:01:06,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716211911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:06,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:06,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:01:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775091730] [2022-07-22 23:01:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:01:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:01:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:01:06,585 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) [2022-07-22 23:01:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:09,366 INFO L93 Difference]: Finished difference Result 2242 states and 3484 transitions. [2022-07-22 23:01:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:01:09,369 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 [2022-07-22 23:01:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:09,383 INFO L225 Difference]: With dead ends: 2242 [2022-07-22 23:01:09,383 INFO L226 Difference]: Without dead ends: 2240 [2022-07-22 23:01:09,384 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 [2022-07-22 23:01:09,385 INFO L413 NwaCegarLoop]: 2581 mSDtfsCounter, 2635 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 8123 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:09,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2831 Valid, 8123 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:01:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2022-07-22 23:01:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 934. [2022-07-22 23:01:09,461 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) [2022-07-22 23:01:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1376 transitions. [2022-07-22 23:01:09,466 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1376 transitions. Word has length 74 [2022-07-22 23:01:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1376 transitions. [2022-07-22 23:01:09,467 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) [2022-07-22 23:01:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1376 transitions. [2022-07-22 23:01:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 23:01:09,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:09,471 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] [2022-07-22 23:01:09,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:01:09,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:09,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1411070669, now seen corresponding path program 1 times [2022-07-22 23:01:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:09,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171371254] [2022-07-22 23:01:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 23:01:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:01:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:01:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 23:01:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:01:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:09,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171371254] [2022-07-22 23:01:09,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171371254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:09,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:09,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:01:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424554183] [2022-07-22 23:01:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:01:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:01:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:01:09,625 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) [2022-07-22 23:01:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:10,526 INFO L93 Difference]: Finished difference Result 1896 states and 2786 transitions. [2022-07-22 23:01:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:01:10,527 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 [2022-07-22 23:01:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:10,532 INFO L225 Difference]: With dead ends: 1896 [2022-07-22 23:01:10,532 INFO L226 Difference]: Without dead ends: 981 [2022-07-22 23:01:10,536 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 [2022-07-22 23:01:10,536 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1481 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 1919 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:01:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-22 23:01:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 954. [2022-07-22 23:01:10,634 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) [2022-07-22 23:01:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2022-07-22 23:01:10,638 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 104 [2022-07-22 23:01:10,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:10,639 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2022-07-22 23:01:10,639 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) [2022-07-22 23:01:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2022-07-22 23:01:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-22 23:01:10,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:10,643 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] [2022-07-22 23:01:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:01:10,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1281162515, now seen corresponding path program 1 times [2022-07-22 23:01:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038302404] [2022-07-22 23:01:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 23:01:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 23:01:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 23:01:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 23:01:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:10,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038302404] [2022-07-22 23:01:10,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038302404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:10,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:10,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975482696] [2022-07-22 23:01:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:10,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:10,836 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) [2022-07-22 23:01:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:12,654 INFO L93 Difference]: Finished difference Result 2412 states and 3616 transitions. [2022-07-22 23:01:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:01:12,655 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 [2022-07-22 23:01:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:12,664 INFO L225 Difference]: With dead ends: 2412 [2022-07-22 23:01:12,664 INFO L226 Difference]: Without dead ends: 1497 [2022-07-22 23:01:12,668 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 [2022-07-22 23:01:12,669 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 2123 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:12,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 3506 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:01:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-07-22 23:01:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 958. [2022-07-22 23:01:12,765 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) [2022-07-22 23:01:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1399 transitions. [2022-07-22 23:01:12,769 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1399 transitions. Word has length 106 [2022-07-22 23:01:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:12,770 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1399 transitions. [2022-07-22 23:01:12,770 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) [2022-07-22 23:01:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1399 transitions. [2022-07-22 23:01:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 23:01:12,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:12,774 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] [2022-07-22 23:01:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:01:12,774 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:12,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 10856094, now seen corresponding path program 1 times [2022-07-22 23:01:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:12,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247940960] [2022-07-22 23:01:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:01:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:01:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 23:01:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:01:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:01:12,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:12,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247940960] [2022-07-22 23:01:12,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247940960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:12,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:12,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:01:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344413864] [2022-07-22 23:01:12,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:01:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:01:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:01:12,928 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) [2022-07-22 23:01:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:13,888 INFO L93 Difference]: Finished difference Result 1905 states and 2803 transitions. [2022-07-22 23:01:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:13,888 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 [2022-07-22 23:01:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:13,894 INFO L225 Difference]: With dead ends: 1905 [2022-07-22 23:01:13,894 INFO L226 Difference]: Without dead ends: 986 [2022-07-22 23:01:13,897 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 [2022-07-22 23:01:13,897 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 365 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:13,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2697 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:01:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-07-22 23:01:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 958. [2022-07-22 23:01:13,959 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) [2022-07-22 23:01:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-22 23:01:13,976 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 109 [2022-07-22 23:01:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-22 23:01:13,977 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) [2022-07-22 23:01:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-22 23:01:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 23:01:13,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:13,982 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] [2022-07-22 23:01:13,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:01:13,982 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:13,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1938120389, now seen corresponding path program 1 times [2022-07-22 23:01:13,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:13,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245032384] [2022-07-22 23:01:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:13,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:01:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:01:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:01:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 23:01:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:01:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245032384] [2022-07-22 23:01:14,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245032384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:14,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:14,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:14,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025826418] [2022-07-22 23:01:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:14,127 INFO L87 Difference]: Start difference. First operand 958 states and 1396 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 23:01:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:15,636 INFO L93 Difference]: Finished difference Result 1507 states and 2274 transitions. [2022-07-22 23:01:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:01:15,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 112 [2022-07-22 23:01:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:15,644 INFO L225 Difference]: With dead ends: 1507 [2022-07-22 23:01:15,645 INFO L226 Difference]: Without dead ends: 1505 [2022-07-22 23:01:15,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:01:15,647 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 1292 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:15,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 5293 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 23:01:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-07-22 23:01:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 958. [2022-07-22 23:01:15,720 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) [2022-07-22 23:01:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1396 transitions. [2022-07-22 23:01:15,723 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1396 transitions. Word has length 112 [2022-07-22 23:01:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:15,723 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1396 transitions. [2022-07-22 23:01:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 23:01:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1396 transitions. [2022-07-22 23:01:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 23:01:15,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:15,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:15,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:01:15,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:15,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1129348236, now seen corresponding path program 1 times [2022-07-22 23:01:15,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:15,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059837433] [2022-07-22 23:01:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:15,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:01:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:01:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:01:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:01:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 23:01:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 23:01:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 23:01:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 23:01:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 23:01:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:01:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059837433] [2022-07-22 23:01:15,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059837433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:01:15,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882878697] [2022-07-22 23:01:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:15,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:01:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:01:15,987 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) [2022-07-22 23:01:16,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:01:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:16,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:01:16,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:01:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 23:01:16,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:01:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-22 23:01:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882878697] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:01:16,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:01:16,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 5] total 12 [2022-07-22 23:01:16,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68668952] [2022-07-22 23:01:16,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:01:16,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:01:16,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:16,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:01:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:01:16,786 INFO L87 Difference]: Start difference. First operand 958 states and 1396 transitions. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 10 states have internal predecessors, (193), 4 states have call successors, (46), 5 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-07-22 23:01:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:20,232 INFO L93 Difference]: Finished difference Result 3941 states and 6074 transitions. [2022-07-22 23:01:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:01:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 10 states have internal predecessors, (193), 4 states have call successors, (46), 5 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 151 [2022-07-22 23:01:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:20,248 INFO L225 Difference]: With dead ends: 3941 [2022-07-22 23:01:20,249 INFO L226 Difference]: Without dead ends: 3022 [2022-07-22 23:01:20,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:01:20,252 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 7057 mSDsluCounter, 4050 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 2994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7473 SdHoareTripleChecker+Valid, 5958 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2994 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:20,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7473 Valid, 5958 Invalid, 5939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2994 Valid, 2945 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:01:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-07-22 23:01:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 965. [2022-07-22 23:01:20,384 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) [2022-07-22 23:01:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1405 transitions. [2022-07-22 23:01:20,388 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1405 transitions. Word has length 151 [2022-07-22 23:01:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:20,388 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1405 transitions. [2022-07-22 23:01:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 10 states have internal predecessors, (193), 4 states have call successors, (46), 5 states have call predecessors, (46), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2022-07-22 23:01:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1405 transitions. [2022-07-22 23:01:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 23:01:20,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:20,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:20,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:01:20,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 23:01:20,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -418278925, now seen corresponding path program 1 times [2022-07-22 23:01:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:20,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016771507] [2022-07-22 23:01:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 23:01:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 23:01:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 23:01:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016771507] [2022-07-22 23:01:20,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016771507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:20,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:20,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:01:20,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784841983] [2022-07-22 23:01:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:20,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:01:20,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:01:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:01:20,859 INFO L87 Difference]: Start difference. First operand 965 states and 1405 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:01:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:25,843 INFO L93 Difference]: Finished difference Result 3113 states and 4851 transitions. [2022-07-22 23:01:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 23:01:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2022-07-22 23:01:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:25,857 INFO L225 Difference]: With dead ends: 3113 [2022-07-22 23:01:25,857 INFO L226 Difference]: Without dead ends: 3111 [2022-07-22 23:01:25,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:01:25,859 INFO L413 NwaCegarLoop]: 3468 mSDtfsCounter, 3720 mSDsluCounter, 17614 mSDsCounter, 0 mSdLazyCounter, 7885 mSolverCounterSat, 1889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3803 SdHoareTripleChecker+Valid, 21082 SdHoareTripleChecker+Invalid, 9774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1889 IncrementalHoareTripleChecker+Valid, 7885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:25,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3803 Valid, 21082 Invalid, 9774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1889 Valid, 7885 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 23:01:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-07-22 23:01:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 967. [2022-07-22 23:01:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.399441340782123) internal successors, (1002), 739 states have internal predecessors, (1002), 203 states have call successors, (203), 47 states have call predecessors, (203), 47 states have return successors, (203), 201 states have call predecessors, (203), 203 states have call successors, (203) [2022-07-22 23:01:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1408 transitions. [2022-07-22 23:01:25,974 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1408 transitions. Word has length 160 [2022-07-22 23:01:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1408 transitions. [2022-07-22 23:01:25,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:01:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1408 transitions. [2022-07-22 23:01:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 23:01:25,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:25,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:25,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:01:25,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash -181531566, now seen corresponding path program 1 times [2022-07-22 23:01:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:25,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868755281] [2022-07-22 23:01:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:01:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:01:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 23:01:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:01:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-22 23:01:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-22 23:01:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 23:01:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:26,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868755281] [2022-07-22 23:01:26,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868755281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:26,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:26,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856575503] [2022-07-22 23:01:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:26,184 INFO L87 Difference]: Start difference. First operand 967 states and 1408 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:27,150 INFO L93 Difference]: Finished difference Result 1923 states and 2815 transitions. [2022-07-22 23:01:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 202 [2022-07-22 23:01:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:27,156 INFO L225 Difference]: With dead ends: 1923 [2022-07-22 23:01:27,156 INFO L226 Difference]: Without dead ends: 995 [2022-07-22 23:01:27,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:01:27,160 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 724 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:27,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2734 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:01:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-07-22 23:01:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2022-07-22 23:01:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3952513966480447) internal successors, (999), 739 states have internal predecessors, (999), 203 states have call successors, (203), 47 states have call predecessors, (203), 47 states have return successors, (203), 201 states have call predecessors, (203), 203 states have call successors, (203) [2022-07-22 23:01:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1405 transitions. [2022-07-22 23:01:27,287 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1405 transitions. Word has length 202 [2022-07-22 23:01:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:27,287 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1405 transitions. [2022-07-22 23:01:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 3 states have internal predecessors, (120), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1405 transitions. [2022-07-22 23:01:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 23:01:27,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:27,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:01:27,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1912426699, now seen corresponding path program 1 times [2022-07-22 23:01:27,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:27,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807774741] [2022-07-22 23:01:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:27,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:01:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:01:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 23:01:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 23:01:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 23:01:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:01:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:01:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 23:01:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-22 23:01:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 23:01:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:27,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807774741] [2022-07-22 23:01:27,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807774741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:27,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:27,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168762265] [2022-07-22 23:01:27,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:27,491 INFO L87 Difference]: Start difference. First operand 967 states and 1405 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:28,457 INFO L93 Difference]: Finished difference Result 1923 states and 2809 transitions. [2022-07-22 23:01:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 205 [2022-07-22 23:01:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:28,462 INFO L225 Difference]: With dead ends: 1923 [2022-07-22 23:01:28,462 INFO L226 Difference]: Without dead ends: 995 [2022-07-22 23:01:28,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:28,465 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 365 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:28,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 3286 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:01:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-07-22 23:01:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2022-07-22 23:01:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3910614525139664) internal successors, (996), 739 states have internal predecessors, (996), 203 states have call successors, (203), 47 states have call predecessors, (203), 47 states have return successors, (203), 201 states have call predecessors, (203), 203 states have call successors, (203) [2022-07-22 23:01:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1402 transitions. [2022-07-22 23:01:28,577 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1402 transitions. Word has length 205 [2022-07-22 23:01:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:28,577 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1402 transitions. [2022-07-22 23:01:28,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1402 transitions. [2022-07-22 23:01:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 23:01:28,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:28,582 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:28,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:01:28,583 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:28,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2088105750, now seen corresponding path program 1 times [2022-07-22 23:01:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961021730] [2022-07-22 23:01:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:28,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:01:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:01:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 23:01:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 23:01:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:01:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-22 23:01:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-22 23:01:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 23:01:28,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:28,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961021730] [2022-07-22 23:01:28,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961021730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:28,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:28,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296855763] [2022-07-22 23:01:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:28,809 INFO L87 Difference]: Start difference. First operand 967 states and 1402 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:29,741 INFO L93 Difference]: Finished difference Result 1923 states and 2803 transitions. [2022-07-22 23:01:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 208 [2022-07-22 23:01:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:29,746 INFO L225 Difference]: With dead ends: 1923 [2022-07-22 23:01:29,746 INFO L226 Difference]: Without dead ends: 995 [2022-07-22 23:01:29,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:29,750 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 365 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:29,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 3287 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 23:01:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-07-22 23:01:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2022-07-22 23:01:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3868715083798884) internal successors, (993), 739 states have internal predecessors, (993), 203 states have call successors, (203), 47 states have call predecessors, (203), 47 states have return successors, (203), 201 states have call predecessors, (203), 203 states have call successors, (203) [2022-07-22 23:01:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1399 transitions. [2022-07-22 23:01:29,832 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1399 transitions. Word has length 208 [2022-07-22 23:01:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:29,836 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1399 transitions. [2022-07-22 23:01:29,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1399 transitions. [2022-07-22 23:01:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-22 23:01:29,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:29,842 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 23:01:29,843 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 338207523, now seen corresponding path program 1 times [2022-07-22 23:01:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:29,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855589707] [2022-07-22 23:01:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:01:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:01:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 23:01:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 23:01:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:01:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:01:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-22 23:01:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-22 23:01:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 23:01:30,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:30,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855589707] [2022-07-22 23:01:30,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855589707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:30,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:30,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:01:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838543883] [2022-07-22 23:01:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:01:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:01:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:30,075 INFO L87 Difference]: Start difference. First operand 967 states and 1399 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:31,146 INFO L93 Difference]: Finished difference Result 1923 states and 2797 transitions. [2022-07-22 23:01:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:01:31,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 211 [2022-07-22 23:01:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:31,151 INFO L225 Difference]: With dead ends: 1923 [2022-07-22 23:01:31,151 INFO L226 Difference]: Without dead ends: 995 [2022-07-22 23:01:31,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:01:31,154 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 730 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:31,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 2702 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 23:01:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2022-07-22 23:01:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 967. [2022-07-22 23:01:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3826815642458101) internal successors, (990), 739 states have internal predecessors, (990), 203 states have call successors, (203), 47 states have call predecessors, (203), 47 states have return successors, (203), 201 states have call predecessors, (203), 203 states have call successors, (203) [2022-07-22 23:01:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1396 transitions. [2022-07-22 23:01:31,245 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1396 transitions. Word has length 211 [2022-07-22 23:01:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:31,246 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1396 transitions. [2022-07-22 23:01:31,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1396 transitions. [2022-07-22 23:01:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 23:01:31,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:01:31,251 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:01:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 23:01:31,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:01:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:01:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -978948990, now seen corresponding path program 1 times [2022-07-22 23:01:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:01:31,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936436097] [2022-07-22 23:01:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:01:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:01:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:01:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:01:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:01:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 23:01:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:01:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:01:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:01:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:01:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:01:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:01:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:01:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:01:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 23:01:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:01:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 23:01:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:01:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 23:01:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 23:01:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:01:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:01:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:01:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-22 23:01:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-22 23:01:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:01:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 23:01:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:01:31,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936436097] [2022-07-22 23:01:31,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936436097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:01:31,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:01:31,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:01:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507082895] [2022-07-22 23:01:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:01:31,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:01:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:01:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:01:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:01:31,514 INFO L87 Difference]: Start difference. First operand 967 states and 1396 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:01:36,831 INFO L93 Difference]: Finished difference Result 3553 states and 5556 transitions. [2022-07-22 23:01:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 23:01:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 214 [2022-07-22 23:01:36,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:01:36,832 INFO L225 Difference]: With dead ends: 3553 [2022-07-22 23:01:36,832 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 23:01:36,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:01:36,839 INFO L413 NwaCegarLoop]: 3664 mSDtfsCounter, 3763 mSDsluCounter, 18546 mSDsCounter, 0 mSdLazyCounter, 8720 mSolverCounterSat, 1945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 22210 SdHoareTripleChecker+Invalid, 10665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1945 IncrementalHoareTripleChecker+Valid, 8720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:01:36,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3958 Valid, 22210 Invalid, 10665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1945 Valid, 8720 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 23:01:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 23:01:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 23:01:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:01:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 23:01:36,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2022-07-22 23:01:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:01:36,842 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 23:01:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:01:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 23:01:36,842 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 23:01:36,845 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 23:01:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 23:01:36,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.