/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:53:17,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:53:17,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:53:17,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:53:17,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:53:17,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:53:17,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:53:17,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:53:17,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:53:17,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:53:17,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:53:17,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:53:17,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:53:17,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:53:17,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:53:17,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:53:17,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:53:17,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:53:17,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:53:17,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:53:17,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:53:17,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:53:17,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:53:17,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:53:17,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:53:17,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:53:17,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:53:17,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:53:17,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:53:17,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:53:17,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:53:17,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:53:17,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:53:17,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:53:17,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:53:17,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:53:17,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:53:17,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:53:17,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:53:17,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:53:17,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:53:17,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:53:17,816 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:53:17,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:53:17,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:53:17,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:53:17,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:53:17,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:53:17,818 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:53:17,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:53:17,818 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:53:17,818 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:53:17,818 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:53:17,819 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:53:17,819 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:53:17,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:53:17,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:53:17,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:53:17,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:53:17,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:53:17,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:53:17,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:53:18,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:53:18,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:53:18,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:53:18,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:53:18,044 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:53:18,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-04-03 02:53:19,085 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:53:19,325 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:53:19,326 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-04-03 02:53:19,343 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ad48d6b/7ac40c725d20415898a4da693e97f9c7/FLAGcb52f8fec [2023-04-03 02:53:19,369 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ad48d6b/7ac40c725d20415898a4da693e97f9c7 [2023-04-03 02:53:19,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:53:19,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:53:19,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:53:19,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:53:19,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:53:19,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a7ba14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19, skipping insertion in model container [2023-04-03 02:53:19,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:53:19,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:53:19,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7363,7376] [2023-04-03 02:53:19,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:53:19,652 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:53:19,699 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[7363,7376] [2023-04-03 02:53:19,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:53:19,728 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:53:19,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19 WrapperNode [2023-04-03 02:53:19,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:53:19,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:53:19,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:53:19,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:53:19,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:53:19,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:53:19,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:53:19,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:53:19,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (1/1) ... [2023-04-03 02:53:19,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:53:19,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:53:19,798 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) [2023-04-03 02:53:19,813 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 [2023-04-03 02:53:19,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:53:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:53:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:53:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:53:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:53:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:53:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:53:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 02:53:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:53:19,939 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:53:19,941 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:53:20,403 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:53:20,497 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:53:20,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:53:20,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:53:20 BoogieIcfgContainer [2023-04-03 02:53:20,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:53:20,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:53:20,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:53:20,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:53:20,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:53:19" (1/3) ... [2023-04-03 02:53:20,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1fefb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:53:20, skipping insertion in model container [2023-04-03 02:53:20,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:53:19" (2/3) ... [2023-04-03 02:53:20,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1fefb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:53:20, skipping insertion in model container [2023-04-03 02:53:20,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:53:20" (3/3) ... [2023-04-03 02:53:20,506 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-04-03 02:53:20,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:53:20,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 02:53:20,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:53:20,573 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@551447a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:53:20,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 02:53:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 127 states have (on average 1.68503937007874) internal successors, (214), 128 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:53:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 02:53:20,587 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:20,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:20,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:20,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1351172971, now seen corresponding path program 1 times [2023-04-03 02:53:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:20,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85380215] [2023-04-03 02:53:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:20,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85380215] [2023-04-03 02:53:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85380215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:20,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:20,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810271512] [2023-04-03 02:53:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:20,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:20,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:20,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:20,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,001 INFO L87 Difference]: Start difference. First operand has 133 states, 127 states have (on average 1.68503937007874) internal successors, (214), 128 states have internal predecessors, (214), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:21,120 INFO L93 Difference]: Finished difference Result 294 states and 459 transitions. [2023-04-03 02:53:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-04-03 02:53:21,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:21,131 INFO L225 Difference]: With dead ends: 294 [2023-04-03 02:53:21,131 INFO L226 Difference]: Without dead ends: 200 [2023-04-03 02:53:21,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,139 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 163 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:21,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 423 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:53:21,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-04-03 02:53:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2023-04-03 02:53:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.407216494845361) internal successors, (273), 194 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 276 transitions. [2023-04-03 02:53:21,190 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 276 transitions. Word has length 62 [2023-04-03 02:53:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:21,191 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 276 transitions. [2023-04-03 02:53:21,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 276 transitions. [2023-04-03 02:53:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-04-03 02:53:21,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:21,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:53:21,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:21,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 857012060, now seen corresponding path program 1 times [2023-04-03 02:53:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632127340] [2023-04-03 02:53:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:21,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632127340] [2023-04-03 02:53:21,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632127340] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:21,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:21,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767700581] [2023-04-03 02:53:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:21,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:21,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:21,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,377 INFO L87 Difference]: Start difference. First operand 198 states and 276 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:21,482 INFO L93 Difference]: Finished difference Result 478 states and 700 transitions. [2023-04-03 02:53:21,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:21,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-04-03 02:53:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:21,491 INFO L225 Difference]: With dead ends: 478 [2023-04-03 02:53:21,491 INFO L226 Difference]: Without dead ends: 327 [2023-04-03 02:53:21,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,497 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 118 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:21,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 350 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:53:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-04-03 02:53:21,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2023-04-03 02:53:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 321 states have (on average 1.4485981308411215) internal successors, (465), 321 states have internal predecessors, (465), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 468 transitions. [2023-04-03 02:53:21,536 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 468 transitions. Word has length 65 [2023-04-03 02:53:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:21,537 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 468 transitions. [2023-04-03 02:53:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 468 transitions. [2023-04-03 02:53:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 02:53:21,541 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:21,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:53:21,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:21,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1609121423, now seen corresponding path program 1 times [2023-04-03 02:53:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758493302] [2023-04-03 02:53:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:21,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758493302] [2023-04-03 02:53:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758493302] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:21,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:21,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067224594] [2023-04-03 02:53:21,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:21,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:21,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:21,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,664 INFO L87 Difference]: Start difference. First operand 325 states and 468 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:21,787 INFO L93 Difference]: Finished difference Result 837 states and 1242 transitions. [2023-04-03 02:53:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:21,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2023-04-03 02:53:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:21,792 INFO L225 Difference]: With dead ends: 837 [2023-04-03 02:53:21,792 INFO L226 Difference]: Without dead ends: 559 [2023-04-03 02:53:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,800 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 113 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:21,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 335 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:53:21,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-04-03 02:53:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 557. [2023-04-03 02:53:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 553 states have (on average 1.4701627486437614) internal successors, (813), 553 states have internal predecessors, (813), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 816 transitions. [2023-04-03 02:53:21,845 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 816 transitions. Word has length 68 [2023-04-03 02:53:21,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:21,846 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 816 transitions. [2023-04-03 02:53:21,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 816 transitions. [2023-04-03 02:53:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 02:53:21,847 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:21,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:21,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:53:21,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:21,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:21,850 INFO L85 PathProgramCache]: Analyzing trace with hash -468011927, now seen corresponding path program 1 times [2023-04-03 02:53:21,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:21,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675086239] [2023-04-03 02:53:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:21,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:21,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:21,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675086239] [2023-04-03 02:53:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675086239] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:21,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:21,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002135823] [2023-04-03 02:53:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:21,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:21,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:21,949 INFO L87 Difference]: Start difference. First operand 557 states and 816 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:22,076 INFO L93 Difference]: Finished difference Result 1489 states and 2218 transitions. [2023-04-03 02:53:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:22,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-04-03 02:53:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:22,082 INFO L225 Difference]: With dead ends: 1489 [2023-04-03 02:53:22,082 INFO L226 Difference]: Without dead ends: 979 [2023-04-03 02:53:22,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:22,088 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 108 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:22,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 320 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:53:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2023-04-03 02:53:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2023-04-03 02:53:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 973 states have (on average 1.4768756423432683) internal successors, (1437), 973 states have internal predecessors, (1437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1440 transitions. [2023-04-03 02:53:22,207 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1440 transitions. Word has length 71 [2023-04-03 02:53:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:22,207 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1440 transitions. [2023-04-03 02:53:22,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1440 transitions. [2023-04-03 02:53:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 02:53:22,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:22,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:53:22,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:22,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 415900427, now seen corresponding path program 1 times [2023-04-03 02:53:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38765179] [2023-04-03 02:53:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:22,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:22,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38765179] [2023-04-03 02:53:22,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38765179] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:22,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:22,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:22,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163830724] [2023-04-03 02:53:22,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:22,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:22,298 INFO L87 Difference]: Start difference. First operand 977 states and 1440 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:22,509 INFO L93 Difference]: Finished difference Result 2661 states and 3954 transitions. [2023-04-03 02:53:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2023-04-03 02:53:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:22,517 INFO L225 Difference]: With dead ends: 2661 [2023-04-03 02:53:22,517 INFO L226 Difference]: Without dead ends: 1731 [2023-04-03 02:53:22,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:22,521 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 103 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:22,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 305 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:53:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2023-04-03 02:53:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1729. [2023-04-03 02:53:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1725 states have (on average 1.4730434782608695) internal successors, (2541), 1725 states have internal predecessors, (2541), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2544 transitions. [2023-04-03 02:53:22,713 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2544 transitions. Word has length 74 [2023-04-03 02:53:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:22,714 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2544 transitions. [2023-04-03 02:53:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2544 transitions. [2023-04-03 02:53:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-03 02:53:22,714 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:22,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:53:22,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:22,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 358876310, now seen corresponding path program 1 times [2023-04-03 02:53:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916363689] [2023-04-03 02:53:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:22,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:22,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916363689] [2023-04-03 02:53:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916363689] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:22,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:53:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682676225] [2023-04-03 02:53:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:22,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:53:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:53:22,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:22,817 INFO L87 Difference]: Start difference. First operand 1729 states and 2544 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:23,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:23,142 INFO L93 Difference]: Finished difference Result 4741 states and 6994 transitions. [2023-04-03 02:53:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:53:23,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2023-04-03 02:53:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:23,153 INFO L225 Difference]: With dead ends: 4741 [2023-04-03 02:53:23,153 INFO L226 Difference]: Without dead ends: 3059 [2023-04-03 02:53:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:53:23,157 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 98 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:23,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 290 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:53:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2023-04-03 02:53:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3057. [2023-04-03 02:53:23,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 3053 states have (on average 1.4611857189649524) internal successors, (4461), 3053 states have internal predecessors, (4461), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4464 transitions. [2023-04-03 02:53:23,495 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4464 transitions. Word has length 77 [2023-04-03 02:53:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:23,496 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4464 transitions. [2023-04-03 02:53:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4464 transitions. [2023-04-03 02:53:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-03 02:53:23,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:23,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:23,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:53:23,502 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:23,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash 22850567, now seen corresponding path program 1 times [2023-04-03 02:53:23,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811194995] [2023-04-03 02:53:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:23,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:23,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811194995] [2023-04-03 02:53:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811194995] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:23,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:23,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-03 02:53:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228103428] [2023-04-03 02:53:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-03 02:53:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-03 02:53:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:53:23,733 INFO L87 Difference]: Start difference. First operand 3057 states and 4464 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:25,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:25,687 INFO L93 Difference]: Finished difference Result 18237 states and 26550 transitions. [2023-04-03 02:53:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 02:53:25,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-04-03 02:53:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:25,738 INFO L225 Difference]: With dead ends: 18237 [2023-04-03 02:53:25,739 INFO L226 Difference]: Without dead ends: 15227 [2023-04-03 02:53:25,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-04-03 02:53:25,751 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 712 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:25,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1058 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:53:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2023-04-03 02:53:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 15217. [2023-04-03 02:53:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15217 states, 15213 states have (on average 1.4522447906395846) internal successors, (22093), 15213 states have internal predecessors, (22093), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 22096 transitions. [2023-04-03 02:53:27,973 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 22096 transitions. Word has length 80 [2023-04-03 02:53:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:27,973 INFO L495 AbstractCegarLoop]: Abstraction has 15217 states and 22096 transitions. [2023-04-03 02:53:27,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 22096 transitions. [2023-04-03 02:53:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:53:27,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:27,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:53:27,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:27,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1953117392, now seen corresponding path program 1 times [2023-04-03 02:53:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559503383] [2023-04-03 02:53:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:28,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559503383] [2023-04-03 02:53:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559503383] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:53:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703270356] [2023-04-03 02:53:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:53:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:53:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:53:28,096 INFO L87 Difference]: Start difference. First operand 15217 states and 22096 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:31,550 INFO L93 Difference]: Finished difference Result 38951 states and 56772 transitions. [2023-04-03 02:53:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:53:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:53:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:31,610 INFO L225 Difference]: With dead ends: 38951 [2023-04-03 02:53:31,610 INFO L226 Difference]: Without dead ends: 23781 [2023-04-03 02:53:31,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:53:31,638 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 678 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:31,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 170 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:53:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23781 states. [2023-04-03 02:53:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23781 to 23779. [2023-04-03 02:53:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23779 states, 23775 states have (on average 1.445509989484753) internal successors, (34367), 23775 states have internal predecessors, (34367), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:34,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23779 states to 23779 states and 34370 transitions. [2023-04-03 02:53:34,861 INFO L78 Accepts]: Start accepts. Automaton has 23779 states and 34370 transitions. Word has length 82 [2023-04-03 02:53:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:34,862 INFO L495 AbstractCegarLoop]: Abstraction has 23779 states and 34370 transitions. [2023-04-03 02:53:34,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:34,862 INFO L276 IsEmpty]: Start isEmpty. Operand 23779 states and 34370 transitions. [2023-04-03 02:53:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:53:34,863 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:34,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:53:34,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:53:34,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:34,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:34,864 INFO L85 PathProgramCache]: Analyzing trace with hash -103003435, now seen corresponding path program 1 times [2023-04-03 02:53:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188376793] [2023-04-03 02:53:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:35,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188376793] [2023-04-03 02:53:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188376793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:53:35,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:53:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-03 02:53:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655022860] [2023-04-03 02:53:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:53:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-03 02:53:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:53:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-03 02:53:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-04-03 02:53:35,270 INFO L87 Difference]: Start difference. First operand 23779 states and 34370 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:53:41,320 INFO L93 Difference]: Finished difference Result 44768 states and 64941 transitions. [2023-04-03 02:53:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 02:53:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:53:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:53:41,438 INFO L225 Difference]: With dead ends: 44768 [2023-04-03 02:53:41,438 INFO L226 Difference]: Without dead ends: 44766 [2023-04-03 02:53:41,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-04-03 02:53:41,453 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1919 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:53:41,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3206 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:53:41,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44766 states. [2023-04-03 02:53:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44766 to 24339. [2023-04-03 02:53:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24339 states, 24335 states have (on average 1.4459420587630984) internal successors, (35187), 24335 states have internal predecessors, (35187), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24339 states to 24339 states and 35190 transitions. [2023-04-03 02:53:45,030 INFO L78 Accepts]: Start accepts. Automaton has 24339 states and 35190 transitions. Word has length 82 [2023-04-03 02:53:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:53:45,031 INFO L495 AbstractCegarLoop]: Abstraction has 24339 states and 35190 transitions. [2023-04-03 02:53:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:53:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 24339 states and 35190 transitions. [2023-04-03 02:53:45,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-03 02:53:45,034 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:53:45,034 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 02:53:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:53:45,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:53:45,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:53:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash -332998009, now seen corresponding path program 1 times [2023-04-03 02:53:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:53:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851553195] [2023-04-03 02:53:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:53:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:46,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:53:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851553195] [2023-04-03 02:53:46,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851553195] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 02:53:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508643970] [2023-04-03 02:53:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:53:46,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 02:53:46,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:53:46,794 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) [2023-04-03 02:53:46,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 02:53:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:53:46,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 80 conjunts are in the unsatisfiable core [2023-04-03 02:53:46,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 02:53:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:53:49,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 02:55:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:55:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508643970] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 02:55:13,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526374953] [2023-04-03 02:55:13,177 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2023-04-03 02:55:13,177 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 02:55:13,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 02:55:13,183 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 02:55:13,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 02:55:14,096 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 210 for LOIs [2023-04-03 02:55:58,483 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 17 [2023-04-03 02:56:08,698 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 131072 conjuctions. This might take some time...