./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:42:27,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:42:27,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:42:27,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:42:27,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:42:27,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:42:27,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:42:27,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:42:27,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:42:27,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:42:27,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:42:27,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:42:27,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:42:27,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:42:27,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:42:27,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:42:27,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:42:27,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:42:27,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:42:27,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:42:27,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:42:27,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:42:27,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:42:27,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:42:27,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:42:27,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:42:27,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:42:27,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:42:27,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:42:27,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:42:27,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:42:27,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:42:27,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:42:27,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:42:27,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:42:27,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:42:27,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:42:27,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:42:27,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:42:27,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:42:27,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:42:27,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:42:27,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:42:27,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:42:27,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:42:27,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:42:27,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:42:27,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:42:27,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:42:27,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:42:27,448 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:42:27,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:42:27,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:42:27,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:42:27,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:42:27,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:42:27,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:42:27,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:42:27,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:42:27,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:42:27,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:42:27,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:42:27,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:42:27,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:42:27,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:42:27,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:42:27,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:42:27,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:42:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:42:27,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:42:27,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:42:27,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:42:27,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:42:27,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b59b42cc833f5b28fc5dc7cc6711355c533ad94229ba44874c6d4d186d9dcb [2021-12-16 03:42:27,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:42:27,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:42:27,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:42:27,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:42:27,744 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:42:27,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2021-12-16 03:42:27,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68db6e184/441992184e8745fda1a8c75ccdba567c/FLAG7dc340b02 [2021-12-16 03:42:28,543 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:42:28,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2021-12-16 03:42:28,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68db6e184/441992184e8745fda1a8c75ccdba567c/FLAG7dc340b02 [2021-12-16 03:42:28,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68db6e184/441992184e8745fda1a8c75ccdba567c [2021-12-16 03:42:28,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:42:28,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:42:28,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:42:28,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:42:28,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:42:28,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:28" (1/1) ... [2021-12-16 03:42:28,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdad27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:28, skipping insertion in model container [2021-12-16 03:42:28,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:28" (1/1) ... [2021-12-16 03:42:28,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:42:28,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:42:30,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2021-12-16 03:42:30,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:42:30,058 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:42:30,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i[202861,202874] [2021-12-16 03:42:30,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:42:30,458 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:42:30,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30 WrapperNode [2021-12-16 03:42:30,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:42:30,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:42:30,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:42:30,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:42:30,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,608 INFO L137 Inliner]: procedures = 157, calls = 812, calls flagged for inlining = 80, calls inlined = 79, statements flattened = 2776 [2021-12-16 03:42:30,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:42:30,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:42:30,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:42:30,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:42:30,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:42:30,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:42:30,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:42:30,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:42:30,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (1/1) ... [2021-12-16 03:42:30,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:42:30,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:42:30,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:42:30,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:42:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:42:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-16 03:42:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:42:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:42:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:42:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-16 03:42:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-16 03:42:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-16 03:42:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-16 03:42:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2021-12-16 03:42:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2021-12-16 03:42:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:42:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:42:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-16 03:42:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-16 03:42:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:42:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:42:30,907 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-16 03:42:30,907 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-16 03:42:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2021-12-16 03:42:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2021-12-16 03:42:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-16 03:42:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-16 03:42:30,908 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:42:30,908 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:42:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2021-12-16 03:42:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2021-12-16 03:42:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:42:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-16 03:42:30,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-16 03:42:30,909 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-16 03:42:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-16 03:42:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-16 03:42:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-16 03:42:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:42:30,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:42:30,910 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-16 03:42:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-16 03:42:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-16 03:42:30,911 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-16 03:42:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:42:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2021-12-16 03:42:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2021-12-16 03:42:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2021-12-16 03:42:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2021-12-16 03:42:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:42:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-16 03:42:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-16 03:42:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2021-12-16 03:42:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2021-12-16 03:42:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:42:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:42:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 03:42:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-16 03:42:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-16 03:42:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:42:30,915 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-16 03:42:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-16 03:42:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-16 03:42:30,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-16 03:42:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-16 03:42:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-16 03:42:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2021-12-16 03:42:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2021-12-16 03:42:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2021-12-16 03:42:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2021-12-16 03:42:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:42:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-12-16 03:42:30,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-12-16 03:42:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:42:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-12-16 03:42:30,918 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-12-16 03:42:30,918 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2021-12-16 03:42:30,919 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2021-12-16 03:42:30,919 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:42:30,919 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:42:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:42:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:42:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-16 03:42:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-16 03:42:30,920 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-16 03:42:30,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-16 03:42:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-16 03:42:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-16 03:42:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:42:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:42:30,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-16 03:42:30,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-16 03:42:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:42:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-12-16 03:42:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-12-16 03:42:30,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:42:30,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:42:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-16 03:42:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-16 03:42:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-12-16 03:42:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-12-16 03:42:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:42:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:42:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:42:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2021-12-16 03:42:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2021-12-16 03:42:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-12-16 03:42:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-12-16 03:42:31,433 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:42:31,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:42:33,575 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:42:33,588 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:42:33,588 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:42:33,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:42:33 BoogieIcfgContainer [2021-12-16 03:42:33,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:42:33,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:42:33,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:42:33,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:42:33,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:42:28" (1/3) ... [2021-12-16 03:42:33,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d36054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:42:33, skipping insertion in model container [2021-12-16 03:42:33,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:30" (2/3) ... [2021-12-16 03:42:33,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d36054e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:42:33, skipping insertion in model container [2021-12-16 03:42:33,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:42:33" (3/3) ... [2021-12-16 03:42:33,599 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-net-slip-ko--108_1a--1b0b0ac-1.i [2021-12-16 03:42:33,603 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:42:33,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:42:33,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:42:33,654 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:42:33,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:42:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 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) [2021-12-16 03:42:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 03:42:33,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:33,699 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:33,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1312205542, now seen corresponding path program 1 times [2021-12-16 03:42:33,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:33,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60316543] [2021-12-16 03:42:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:33,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:42:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:34,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:34,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60316543] [2021-12-16 03:42:34,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60316543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:34,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:34,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:42:34,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777734346] [2021-12-16 03:42:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:34,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:42:34,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:42:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:42:34,269 INFO L87 Difference]: Start difference. First operand has 964 states, 712 states have (on average 1.4297752808988764) internal successors, (1018), 739 states have internal predecessors, (1018), 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) [2021-12-16 03:42:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:35,327 INFO L93 Difference]: Finished difference Result 1942 states and 2905 transitions. [2021-12-16 03:42:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:42:35,329 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 [2021-12-16 03:42:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:35,347 INFO L225 Difference]: With dead ends: 1942 [2021-12-16 03:42:35,347 INFO L226 Difference]: Without dead ends: 943 [2021-12-16 03:42:35,355 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:35,358 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 1570 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:35,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 1975 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 03:42:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-12-16 03:42:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2021-12-16 03:42:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4193548387096775) internal successors, (968), 706 states have internal predecessors, (968), 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) [2021-12-16 03:42:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1366 transitions. [2021-12-16 03:42:35,486 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1366 transitions. Word has length 59 [2021-12-16 03:42:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:35,486 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1366 transitions. [2021-12-16 03:42:35,487 INFO L471 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) [2021-12-16 03:42:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1366 transitions. [2021-12-16 03:42:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 03:42:35,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:35,492 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:35,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:42:35,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1735852264, now seen corresponding path program 1 times [2021-12-16 03:42:35,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:35,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892100154] [2021-12-16 03:42:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:35,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:42:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:35,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892100154] [2021-12-16 03:42:35,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892100154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:35,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:35,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:42:35,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277124694] [2021-12-16 03:42:35,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:42:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:42:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:42:35,615 INFO L87 Difference]: Start difference. First operand 925 states and 1366 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) [2021-12-16 03:42:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:37,079 INFO L93 Difference]: Finished difference Result 1851 states and 2740 transitions. [2021-12-16 03:42:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:42:37,081 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 [2021-12-16 03:42:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:37,089 INFO L225 Difference]: With dead ends: 1851 [2021-12-16 03:42:37,090 INFO L226 Difference]: Without dead ends: 943 [2021-12-16 03:42:37,093 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:37,094 INFO L933 BasicCegarLoop]: 1314 mSDtfsCounter, 367 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:37,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 3860 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 03:42:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2021-12-16 03:42:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 925. [2021-12-16 03:42:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 682 states have (on average 1.4178885630498534) internal successors, (967), 706 states have internal predecessors, (967), 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) [2021-12-16 03:42:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1365 transitions. [2021-12-16 03:42:37,151 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1365 transitions. Word has length 59 [2021-12-16 03:42:37,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:37,151 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1365 transitions. [2021-12-16 03:42:37,151 INFO L471 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) [2021-12-16 03:42:37,152 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1365 transitions. [2021-12-16 03:42:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 03:42:37,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:37,154 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:37,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:42:37,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1026212091, now seen corresponding path program 1 times [2021-12-16 03:42:37,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:37,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797037995] [2021-12-16 03:42:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:37,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:37,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:37,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797037995] [2021-12-16 03:42:37,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797037995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:37,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:37,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:42:37,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139147744] [2021-12-16 03:42:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:37,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:42:37,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:42:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:42:37,336 INFO L87 Difference]: Start difference. First operand 925 states and 1365 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) [2021-12-16 03:42:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:39,056 INFO L93 Difference]: Finished difference Result 1457 states and 2226 transitions. [2021-12-16 03:42:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:42:39,057 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 [2021-12-16 03:42:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:39,066 INFO L225 Difference]: With dead ends: 1457 [2021-12-16 03:42:39,066 INFO L226 Difference]: Without dead ends: 1455 [2021-12-16 03:42:39,068 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:39,069 INFO L933 BasicCegarLoop]: 2127 mSDtfsCounter, 1291 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:39,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 5663 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 03:42:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-12-16 03:42:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 927. [2021-12-16 03:42:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 684 states have (on average 1.4166666666666667) internal successors, (969), 708 states have internal predecessors, (969), 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) [2021-12-16 03:42:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1367 transitions. [2021-12-16 03:42:39,121 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1367 transitions. Word has length 62 [2021-12-16 03:42:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:39,121 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1367 transitions. [2021-12-16 03:42:39,122 INFO L471 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) [2021-12-16 03:42:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1367 transitions. [2021-12-16 03:42:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-16 03:42:39,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:39,124 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:39,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:42:39,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1878108753, now seen corresponding path program 1 times [2021-12-16 03:42:39,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:39,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873790337] [2021-12-16 03:42:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:39,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:42:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:39,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:39,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873790337] [2021-12-16 03:42:39,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873790337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:39,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:39,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:42:39,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161942609] [2021-12-16 03:42:39,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:39,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:42:39,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:42:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:42:39,298 INFO L87 Difference]: Start difference. First operand 927 states and 1367 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) [2021-12-16 03:42:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:41,215 INFO L93 Difference]: Finished difference Result 2367 states and 3571 transitions. [2021-12-16 03:42:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:42:41,215 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 [2021-12-16 03:42:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:41,224 INFO L225 Difference]: With dead ends: 2367 [2021-12-16 03:42:41,224 INFO L226 Difference]: Without dead ends: 1459 [2021-12-16 03:42:41,228 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:41,230 INFO L933 BasicCegarLoop]: 1813 mSDtfsCounter, 2180 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 3404 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 03:42:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-12-16 03:42:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 928. [2021-12-16 03:42:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 685 states have (on average 1.416058394160584) internal successors, (970), 709 states have internal predecessors, (970), 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) [2021-12-16 03:42:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1368 transitions. [2021-12-16 03:42:41,284 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1368 transitions. Word has length 72 [2021-12-16 03:42:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:41,285 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1368 transitions. [2021-12-16 03:42:41,285 INFO L471 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) [2021-12-16 03:42:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1368 transitions. [2021-12-16 03:42:41,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 03:42:41,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:41,288 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:41,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:42:41,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 45860082, now seen corresponding path program 1 times [2021-12-16 03:42:41,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019690208] [2021-12-16 03:42:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:41,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:41,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019690208] [2021-12-16 03:42:41,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019690208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:41,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:42:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703676827] [2021-12-16 03:42:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:42:41,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:42:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:42:41,461 INFO L87 Difference]: Start difference. First operand 928 states and 1368 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) [2021-12-16 03:42:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:44,057 INFO L93 Difference]: Finished difference Result 2238 states and 3479 transitions. [2021-12-16 03:42:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:42:44,058 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 [2021-12-16 03:42:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:44,072 INFO L225 Difference]: With dead ends: 2238 [2021-12-16 03:42:44,072 INFO L226 Difference]: Without dead ends: 2236 [2021-12-16 03:42:44,074 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:44,081 INFO L933 BasicCegarLoop]: 2536 mSDtfsCounter, 2700 mSDsluCounter, 6338 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:44,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2897 Valid, 8874 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 03:42:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2021-12-16 03:42:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 930. [2021-12-16 03:42:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 686 states have (on average 1.4154518950437318) internal successors, (971), 709 states have internal predecessors, (971), 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) [2021-12-16 03:42:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1371 transitions. [2021-12-16 03:42:44,141 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1371 transitions. Word has length 74 [2021-12-16 03:42:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:44,142 INFO L470 AbstractCegarLoop]: Abstraction has 930 states and 1371 transitions. [2021-12-16 03:42:44,142 INFO L471 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) [2021-12-16 03:42:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1371 transitions. [2021-12-16 03:42:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-16 03:42:44,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:44,149 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:44,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:42:44,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2045364121, now seen corresponding path program 1 times [2021-12-16 03:42:44,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:44,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879194939] [2021-12-16 03:42:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:44,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-16 03:42:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:42:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:42:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:42:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:42:44,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:44,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879194939] [2021-12-16 03:42:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879194939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:44,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:44,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:42:44,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691657217] [2021-12-16 03:42:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:42:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:42:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:42:44,355 INFO L87 Difference]: Start difference. First operand 930 states and 1371 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) [2021-12-16 03:42:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:45,360 INFO L93 Difference]: Finished difference Result 1888 states and 2776 transitions. [2021-12-16 03:42:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:42:45,360 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 [2021-12-16 03:42:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:45,366 INFO L225 Difference]: With dead ends: 1888 [2021-12-16 03:42:45,366 INFO L226 Difference]: Without dead ends: 977 [2021-12-16 03:42:45,369 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:45,371 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 1471 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:45,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 1913 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 03:42:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-12-16 03:42:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 950. [2021-12-16 03:42:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 723 states have internal predecessors, (985), 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) [2021-12-16 03:42:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1389 transitions. [2021-12-16 03:42:45,429 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1389 transitions. Word has length 104 [2021-12-16 03:42:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:45,430 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1389 transitions. [2021-12-16 03:42:45,430 INFO L471 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) [2021-12-16 03:42:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1389 transitions. [2021-12-16 03:42:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 03:42:45,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:45,434 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:45,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:42:45,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:45,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1129591135, now seen corresponding path program 1 times [2021-12-16 03:42:45,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:45,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351450667] [2021-12-16 03:42:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:45,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:42:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:42:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:42:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:42:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:42:45,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351450667] [2021-12-16 03:42:45,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351450667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:45,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:45,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:42:45,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745800564] [2021-12-16 03:42:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:45,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:42:45,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:42:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:42:45,625 INFO L87 Difference]: Start difference. First operand 950 states and 1389 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) [2021-12-16 03:42:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:47,585 INFO L93 Difference]: Finished difference Result 2404 states and 3606 transitions. [2021-12-16 03:42:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:42:47,585 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 [2021-12-16 03:42:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:47,593 INFO L225 Difference]: With dead ends: 2404 [2021-12-16 03:42:47,594 INFO L226 Difference]: Without dead ends: 1493 [2021-12-16 03:42:47,597 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:47,598 INFO L933 BasicCegarLoop]: 1908 mSDtfsCounter, 2010 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:47,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 3576 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 03:42:47,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-12-16 03:42:47,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 954. [2021-12-16 03:42:47,653 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) [2021-12-16 03:42:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1394 transitions. [2021-12-16 03:42:47,659 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1394 transitions. Word has length 106 [2021-12-16 03:42:47,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:47,659 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1394 transitions. [2021-12-16 03:42:47,659 INFO L471 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) [2021-12-16 03:42:47,660 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1394 transitions. [2021-12-16 03:42:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-16 03:42:47,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:47,664 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:47,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:42:47,665 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1046832022, now seen corresponding path program 1 times [2021-12-16 03:42:47,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:47,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846813895] [2021-12-16 03:42:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:47,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:42:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 03:42:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:42:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:42:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 03:42:47,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:47,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846813895] [2021-12-16 03:42:47,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846813895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:47,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:47,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:42:47,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752549125] [2021-12-16 03:42:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:47,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:42:47,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:42:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:42:47,805 INFO L87 Difference]: Start difference. First operand 954 states and 1394 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) [2021-12-16 03:42:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:48,857 INFO L93 Difference]: Finished difference Result 1897 states and 2793 transitions. [2021-12-16 03:42:48,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:42:48,857 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 [2021-12-16 03:42:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:48,864 INFO L225 Difference]: With dead ends: 1897 [2021-12-16 03:42:48,865 INFO L226 Difference]: Without dead ends: 982 [2021-12-16 03:42:48,868 INFO L932 BasicCegarLoop]: 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 [2021-12-16 03:42:48,869 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 360 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:48,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 2874 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 03:42:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-12-16 03:42:48,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 954. [2021-12-16 03:42:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 704 states have (on average 1.4019886363636365) internal successors, (987), 727 states have internal predecessors, (987), 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) [2021-12-16 03:42:48,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1391 transitions. [2021-12-16 03:42:48,947 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1391 transitions. Word has length 109 [2021-12-16 03:42:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:48,947 INFO L470 AbstractCegarLoop]: Abstraction has 954 states and 1391 transitions. [2021-12-16 03:42:48,947 INFO L471 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) [2021-12-16 03:42:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1391 transitions. [2021-12-16 03:42:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 03:42:48,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:48,952 INFO L514 BasicCegarLoop]: 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] [2021-12-16 03:42:48,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:42:48,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:48,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash 433348783, now seen corresponding path program 1 times [2021-12-16 03:42:48,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405163097] [2021-12-16 03:42:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:48,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:42:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 03:42:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:42:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:42:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:42:49,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405163097] [2021-12-16 03:42:49,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405163097] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:42:49,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477656830] [2021-12-16 03:42:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:49,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:42:49,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:42:49,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:42:49,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:42:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:49,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 03:42:49,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:42:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 03:42:49,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:42:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 03:42:50,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477656830] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:42:50,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:42:50,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 11 [2021-12-16 03:42:50,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068584998] [2021-12-16 03:42:50,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:42:50,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:42:50,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:42:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:42:50,157 INFO L87 Difference]: Start difference. First operand 954 states and 1391 transitions. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-16 03:42:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:54,709 INFO L93 Difference]: Finished difference Result 3933 states and 6064 transitions. [2021-12-16 03:42:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:42:54,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 112 [2021-12-16 03:42:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:54,724 INFO L225 Difference]: With dead ends: 3933 [2021-12-16 03:42:54,725 INFO L226 Difference]: Without dead ends: 3018 [2021-12-16 03:42:54,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:42:54,731 INFO L933 BasicCegarLoop]: 1860 mSDtfsCounter, 5498 mSDsluCounter, 4211 mSDsCounter, 0 mSdLazyCounter, 3843 mSolverCounterSat, 1828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5911 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1828 IncrementalHoareTripleChecker+Valid, 3843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:54,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5911 Valid, 6071 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1828 Valid, 3843 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-16 03:42:54,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2021-12-16 03:42:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 961. [2021-12-16 03:42:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 711 states have (on average 1.40084388185654) internal successors, (996), 734 states have internal predecessors, (996), 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) [2021-12-16 03:42:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1400 transitions. [2021-12-16 03:42:54,839 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1400 transitions. Word has length 112 [2021-12-16 03:42:54,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:54,839 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1400 transitions. [2021-12-16 03:42:54,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 10 states have internal predecessors, (163), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-16 03:42:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1400 transitions. [2021-12-16 03:42:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 03:42:54,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:54,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:42:54,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:42:55,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:42:55,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -824916650, now seen corresponding path program 1 times [2021-12-16 03:42:55,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:55,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687179668] [2021-12-16 03:42:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:55,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:42:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:42:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:42:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:42:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 03:42:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 03:42:55,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:55,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687179668] [2021-12-16 03:42:55,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687179668] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:42:55,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424643368] [2021-12-16 03:42:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:55,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:42:55,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:42:55,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:42:55,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:42:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:42:55,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:42:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-16 03:42:56,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:42:56,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424643368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:56,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:42:56,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-12-16 03:42:56,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481388573] [2021-12-16 03:42:56,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:56,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:42:56,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:42:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:42:56,076 INFO L87 Difference]: Start difference. First operand 961 states and 1400 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 03:42:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:56,444 INFO L93 Difference]: Finished difference Result 2661 states and 3999 transitions. [2021-12-16 03:42:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:42:56,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2021-12-16 03:42:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:56,454 INFO L225 Difference]: With dead ends: 2661 [2021-12-16 03:42:56,455 INFO L226 Difference]: Without dead ends: 1739 [2021-12-16 03:42:56,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:42:56,486 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 1191 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5543 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:56,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 5543 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:42:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2021-12-16 03:42:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 963. [2021-12-16 03:42:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 713 states have (on average 1.399719495091164) internal successors, (998), 736 states have internal predecessors, (998), 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) [2021-12-16 03:42:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1402 transitions. [2021-12-16 03:42:56,566 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1402 transitions. Word has length 121 [2021-12-16 03:42:56,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:56,567 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1402 transitions. [2021-12-16 03:42:56,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 03:42:56,567 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1402 transitions. [2021-12-16 03:42:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:42:56,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:56,573 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:42:56,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:42:56,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 03:42:56,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1909926563, now seen corresponding path program 1 times [2021-12-16 03:42:56,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:56,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78270020] [2021-12-16 03:42:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:56,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:42:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:42:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 03:42:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:42:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:42:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 03:42:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:42:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 03:42:56,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:56,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78270020] [2021-12-16 03:42:56,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78270020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:56,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:42:56,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:42:56,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604748434] [2021-12-16 03:42:56,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:56,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:42:56,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:42:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:42:56,959 INFO L87 Difference]: Start difference. First operand 963 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:42:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:58,298 INFO L93 Difference]: Finished difference Result 2316 states and 3446 transitions. [2021-12-16 03:42:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:42:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-16 03:42:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:58,306 INFO L225 Difference]: With dead ends: 2316 [2021-12-16 03:42:58,306 INFO L226 Difference]: Without dead ends: 1392 [2021-12-16 03:42:58,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:42:58,310 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 782 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:58,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 4015 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 03:42:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-16 03:42:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 965. [2021-12-16 03:42:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 715 states have (on average 1.3986013986013985) internal successors, (1000), 738 states have internal predecessors, (1000), 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) [2021-12-16 03:42:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2021-12-16 03:42:58,374 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 130 [2021-12-16 03:42:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:58,374 INFO L470 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2021-12-16 03:42:58,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:42:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2021-12-16 03:42:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-16 03:42:58,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:58,379 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:42:58,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 03:42:58,380 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash 893640959, now seen corresponding path program 1 times [2021-12-16 03:42:58,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:58,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846206929] [2021-12-16 03:42:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:58,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:42:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:42:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:42:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:42:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:42:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:42:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:42:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:42:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:42:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 03:42:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:42:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 03:42:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 03:42:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:42:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 03:42:58,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:42:58,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846206929] [2021-12-16 03:42:58,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846206929] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:42:58,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757677826] [2021-12-16 03:42:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:58,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:42:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:42:58,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:42:58,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:42:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:42:59,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-16 03:42:59,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:42:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-16 03:42:59,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:42:59,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757677826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:42:59,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:42:59,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 10 [2021-12-16 03:42:59,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897821712] [2021-12-16 03:42:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:42:59,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:42:59,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:42:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:42:59,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:42:59,560 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:42:59,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:59,783 INFO L93 Difference]: Finished difference Result 1912 states and 2797 transitions. [2021-12-16 03:42:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:42:59,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2021-12-16 03:42:59,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:59,791 INFO L225 Difference]: With dead ends: 1912 [2021-12-16 03:42:59,791 INFO L226 Difference]: Without dead ends: 973 [2021-12-16 03:42:59,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:42:59,795 INFO L933 BasicCegarLoop]: 1363 mSDtfsCounter, 39 mSDsluCounter, 9505 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 10868 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:59,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 10868 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:42:59,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-12-16 03:42:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 967. [2021-12-16 03:42:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 716 states have (on average 1.3980446927374302) internal successors, (1001), 740 states have internal predecessors, (1001), 202 states have call successors, (202), 47 states have call predecessors, (202), 48 states have return successors, (203), 200 states have call predecessors, (203), 202 states have call successors, (203) [2021-12-16 03:42:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1406 transitions. [2021-12-16 03:42:59,856 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1406 transitions. Word has length 138 [2021-12-16 03:42:59,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:59,857 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1406 transitions. [2021-12-16 03:42:59,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:42:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1406 transitions. [2021-12-16 03:42:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:42:59,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:59,863 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-16 03:42:59,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:43:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:43:00,084 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:43:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:43:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -598170049, now seen corresponding path program 1 times [2021-12-16 03:43:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:43:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217971294] [2021-12-16 03:43:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:43:00,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:43:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:43:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:43:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:43:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:43:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:43:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:43:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:43:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:43:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:43:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:43:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:43:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:43:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 03:43:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-16 03:43:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-16 03:43:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 03:43:00,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:43:00,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217971294] [2021-12-16 03:43:00,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217971294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:43:00,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:43:00,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:43:00,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318753642] [2021-12-16 03:43:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:43:00,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:43:00,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:43:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:43:00,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:43:00,314 INFO L87 Difference]: Start difference. First operand 967 states and 1406 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:43:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:43:02,567 INFO L93 Difference]: Finished difference Result 2852 states and 4298 transitions. [2021-12-16 03:43:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:43:02,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2021-12-16 03:43:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:43:02,579 INFO L225 Difference]: With dead ends: 2852 [2021-12-16 03:43:02,579 INFO L226 Difference]: Without dead ends: 1926 [2021-12-16 03:43:02,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:43:02,583 INFO L933 BasicCegarLoop]: 2238 mSDtfsCounter, 1739 mSDsluCounter, 7845 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 10083 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:43:02,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 10083 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 03:43:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2021-12-16 03:43:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 972. [2021-12-16 03:43:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 720 states have (on average 1.3958333333333333) internal successors, (1005), 744 states have internal predecessors, (1005), 202 states have call successors, (202), 47 states have call predecessors, (202), 49 states have return successors, (207), 201 states have call predecessors, (207), 202 states have call successors, (207) [2021-12-16 03:43:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1414 transitions. [2021-12-16 03:43:02,658 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1414 transitions. Word has length 141 [2021-12-16 03:43:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:43:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1414 transitions. [2021-12-16 03:43:02,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 03:43:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1414 transitions. [2021-12-16 03:43:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-16 03:43:02,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:43:02,664 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:43:02,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 03:43:02,664 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:43:02,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:43:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1479322347, now seen corresponding path program 2 times [2021-12-16 03:43:02,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:43:02,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119210043] [2021-12-16 03:43:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:43:02,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:43:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:43:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:03,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:43:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:03,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:43:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:43:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:43:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:43:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-16 03:43:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:43:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 03:43:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:43:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 03:43:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:43:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:43:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 03:43:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 03:43:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:43:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 03:43:04,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:43:04,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119210043] [2021-12-16 03:43:04,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119210043] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:43:04,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543306871] [2021-12-16 03:43:04,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:43:04,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:43:04,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:43:04,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:43:04,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process