/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.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 06:34:24,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 06:34:24,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 06:34:24,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 06:34:24,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 06:34:24,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 06:34:24,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 06:34:24,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 06:34:24,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 06:34:24,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 06:34:24,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 06:34:24,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 06:34:24,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 06:34:24,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 06:34:24,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 06:34:24,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 06:34:24,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 06:34:24,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 06:34:24,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 06:34:24,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 06:34:24,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 06:34:24,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 06:34:24,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 06:34:24,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 06:34:24,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 06:34:24,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 06:34:24,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 06:34:24,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 06:34:24,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 06:34:24,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 06:34:24,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 06:34:24,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 06:34:24,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 06:34:24,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 06:34:24,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 06:34:24,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 06:34:24,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 06:34:24,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 06:34:24,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 06:34:24,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 06:34:24,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 06:34:24,829 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 [2023-04-01 06:34:24,841 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 06:34:24,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 06:34:24,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 06:34:24,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 06:34:24,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 06:34:24,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 06:34:24,842 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 06:34:24,843 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 06:34:24,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 06:34:24,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 06:34:24,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 06:34:24,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:24,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 06:34:24,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 06:34:24,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 06:34:24,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 06:34:24,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 06:34:24,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 06:34:24,992 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 06:34:24,992 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 06:34:24,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-01 06:34:25,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 06:34:26,119 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 06:34:26,120 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-01 06:34:26,126 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/831af13b8/b3a3821242964dfd8b9ad608b09dc559/FLAG5bb700e95 [2023-04-01 06:34:26,134 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/831af13b8/b3a3821242964dfd8b9ad608b09dc559 [2023-04-01 06:34:26,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 06:34:26,137 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 06:34:26,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:26,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 06:34:26,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 06:34:26,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc93c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26, skipping insertion in model container [2023-04-01 06:34:26,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 06:34:26,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 06:34:26,353 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.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2023-04-01 06:34:26,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:26,400 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 06:34:26,440 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.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2023-04-01 06:34:26,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 06:34:26,479 INFO L208 MainTranslator]: Completed translation [2023-04-01 06:34:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26 WrapperNode [2023-04-01 06:34:26,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 06:34:26,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 06:34:26,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 06:34:26,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 06:34:26,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 06:34:26,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 06:34:26,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 06:34:26,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 06:34:26,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (1/1) ... [2023-04-01 06:34:26,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 06:34:26,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 06:34:26,540 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) [2023-04-01 06:34:26,565 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 [2023-04-01 06:34:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 06:34:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 06:34:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 06:34:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 06:34:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 06:34:26,604 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 06:34:26,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 06:34:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 06:34:26,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 06:34:26,726 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 06:34:26,727 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 06:34:27,214 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 06:34:27,338 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 06:34:27,339 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 06:34:27,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:34:27 BoogieIcfgContainer [2023-04-01 06:34:27,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 06:34:27,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 06:34:27,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 06:34:27,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 06:34:27,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:34:26" (1/3) ... [2023-04-01 06:34:27,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b403d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:34:27, skipping insertion in model container [2023-04-01 06:34:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:34:26" (2/3) ... [2023-04-01 06:34:27,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b403d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:34:27, skipping insertion in model container [2023-04-01 06:34:27,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:34:27" (3/3) ... [2023-04-01 06:34:27,349 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-01 06:34:27,362 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 06:34:27,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 06:34:27,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 06:34:27,407 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;@45902d8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 06:34:27,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 06:34:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 163 states have internal predecessors, (275), 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) [2023-04-01 06:34:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-01 06:34:27,420 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:27,421 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] [2023-04-01 06:34:27,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:27,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 568319117, now seen corresponding path program 1 times [2023-04-01 06:34:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:27,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190209434] [2023-04-01 06:34:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:27,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:28,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190209434] [2023-04-01 06:34:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190209434] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 06:34:28,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472802884] [2023-04-01 06:34:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 06:34:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 06:34:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:34:28,056 INFO L87 Difference]: Start difference. First operand has 168 states, 162 states have (on average 1.6975308641975309) internal successors, (275), 163 states have internal predecessors, (275), 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 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-04-01 06:34:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:28,352 INFO L93 Difference]: Finished difference Result 582 states and 922 transitions. [2023-04-01 06:34:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 06:34:28,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 [2023-04-01 06:34:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:28,368 INFO L225 Difference]: With dead ends: 582 [2023-04-01 06:34:28,368 INFO L226 Difference]: Without dead ends: 473 [2023-04-01 06:34:28,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-04-01 06:34:28,374 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 944 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:28,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1255 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 06:34:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-04-01 06:34:28,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 465. [2023-04-01 06:34:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 461 states have (on average 1.4143167028199566) internal successors, (652), 461 states have internal predecessors, (652), 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) [2023-04-01 06:34:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 655 transitions. [2023-04-01 06:34:28,471 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 655 transitions. Word has length 71 [2023-04-01 06:34:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:28,473 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 655 transitions. [2023-04-01 06:34:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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) [2023-04-01 06:34:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 655 transitions. [2023-04-01 06:34:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:34:28,480 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:28,480 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] [2023-04-01 06:34:28,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 06:34:28,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:28,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1469149587, now seen corresponding path program 1 times [2023-04-01 06:34:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035551831] [2023-04-01 06:34:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:28,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035551831] [2023-04-01 06:34:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035551831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301910096] [2023-04-01 06:34:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:28,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:28,657 INFO L87 Difference]: Start difference. First operand 465 states and 655 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:28,894 INFO L93 Difference]: Finished difference Result 1136 states and 1648 transitions. [2023-04-01 06:34:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-01 06:34:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:28,897 INFO L225 Difference]: With dead ends: 1136 [2023-04-01 06:34:28,897 INFO L226 Difference]: Without dead ends: 732 [2023-04-01 06:34:28,899 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 [2023-04-01 06:34:28,900 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 578 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:28,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 233 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-04-01 06:34:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 730. [2023-04-01 06:34:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 726 states have (on average 1.4462809917355373) internal successors, (1050), 726 states have internal predecessors, (1050), 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) [2023-04-01 06:34:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1053 transitions. [2023-04-01 06:34:28,973 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1053 transitions. Word has length 72 [2023-04-01 06:34:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:28,974 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1053 transitions. [2023-04-01 06:34:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1053 transitions. [2023-04-01 06:34:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:34:28,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:28,975 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] [2023-04-01 06:34:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 06:34:28,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:28,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1789691098, now seen corresponding path program 1 times [2023-04-01 06:34:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955387381] [2023-04-01 06:34:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:29,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955387381] [2023-04-01 06:34:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955387381] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:29,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308916491] [2023-04-01 06:34:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:29,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:29,199 INFO L87 Difference]: Start difference. First operand 730 states and 1053 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:29,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:29,523 INFO L93 Difference]: Finished difference Result 1844 states and 2725 transitions. [2023-04-01 06:34:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-01 06:34:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:29,527 INFO L225 Difference]: With dead ends: 1844 [2023-04-01 06:34:29,528 INFO L226 Difference]: Without dead ends: 1262 [2023-04-01 06:34:29,529 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 [2023-04-01 06:34:29,530 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 574 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:29,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 250 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-04-01 06:34:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1260. [2023-04-01 06:34:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1256 states have (on average 1.4689490445859872) internal successors, (1845), 1256 states have internal predecessors, (1845), 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) [2023-04-01 06:34:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1848 transitions. [2023-04-01 06:34:29,684 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1848 transitions. Word has length 72 [2023-04-01 06:34:29,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:29,685 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1848 transitions. [2023-04-01 06:34:29,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1848 transitions. [2023-04-01 06:34:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:34:29,687 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:29,687 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] [2023-04-01 06:34:29,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 06:34:29,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:29,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1822635019, now seen corresponding path program 1 times [2023-04-01 06:34:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345183033] [2023-04-01 06:34:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:29,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345183033] [2023-04-01 06:34:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345183033] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:29,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414061938] [2023-04-01 06:34:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:29,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:29,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:29,815 INFO L87 Difference]: Start difference. First operand 1260 states and 1848 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:30,201 INFO L93 Difference]: Finished difference Result 3468 states and 5162 transitions. [2023-04-01 06:34:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-01 06:34:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:30,208 INFO L225 Difference]: With dead ends: 3468 [2023-04-01 06:34:30,208 INFO L226 Difference]: Without dead ends: 2322 [2023-04-01 06:34:30,210 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 [2023-04-01 06:34:30,217 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 544 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:30,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 249 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:30,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2023-04-01 06:34:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2320. [2023-04-01 06:34:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2316 states have (on average 1.4792746113989637) internal successors, (3426), 2316 states have internal predecessors, (3426), 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) [2023-04-01 06:34:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3429 transitions. [2023-04-01 06:34:30,434 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3429 transitions. Word has length 72 [2023-04-01 06:34:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:30,435 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3429 transitions. [2023-04-01 06:34:30,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3429 transitions. [2023-04-01 06:34:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:34:30,436 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:30,436 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] [2023-04-01 06:34:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 06:34:30,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:30,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 276559676, now seen corresponding path program 1 times [2023-04-01 06:34:30,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:30,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765841364] [2023-04-01 06:34:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:30,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:30,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:30,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765841364] [2023-04-01 06:34:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765841364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:30,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:30,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260811006] [2023-04-01 06:34:30,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:30,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:30,540 INFO L87 Difference]: Start difference. First operand 2320 states and 3429 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:31,144 INFO L93 Difference]: Finished difference Result 6678 states and 9953 transitions. [2023-04-01 06:34:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:31,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-01 06:34:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:31,157 INFO L225 Difference]: With dead ends: 6678 [2023-04-01 06:34:31,157 INFO L226 Difference]: Without dead ends: 4442 [2023-04-01 06:34:31,160 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 [2023-04-01 06:34:31,160 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 549 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:31,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 241 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:31,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2023-04-01 06:34:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4440. [2023-04-01 06:34:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4436 states have (on average 1.4792605951307485) internal successors, (6562), 4436 states have internal predecessors, (6562), 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) [2023-04-01 06:34:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6565 transitions. [2023-04-01 06:34:31,544 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6565 transitions. Word has length 72 [2023-04-01 06:34:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:31,544 INFO L495 AbstractCegarLoop]: Abstraction has 4440 states and 6565 transitions. [2023-04-01 06:34:31,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6565 transitions. [2023-04-01 06:34:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 06:34:31,545 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:31,545 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] [2023-04-01 06:34:31,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 06:34:31,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:31,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 502446494, now seen corresponding path program 1 times [2023-04-01 06:34:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840057244] [2023-04-01 06:34:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:31,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:31,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840057244] [2023-04-01 06:34:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840057244] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:31,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:31,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 06:34:31,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226546048] [2023-04-01 06:34:31,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:31,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 06:34:31,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:31,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 06:34:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 06:34:31,633 INFO L87 Difference]: Start difference. First operand 4440 states and 6565 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:32,553 INFO L93 Difference]: Finished difference Result 12357 states and 18330 transitions. [2023-04-01 06:34:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 06:34:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 72 [2023-04-01 06:34:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:32,577 INFO L225 Difference]: With dead ends: 12357 [2023-04-01 06:34:32,577 INFO L226 Difference]: Without dead ends: 7962 [2023-04-01 06:34:32,584 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 [2023-04-01 06:34:32,584 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 565 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:32,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 225 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 06:34:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2023-04-01 06:34:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 7960. [2023-04-01 06:34:33,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 7956 states have (on average 1.4680744092508797) internal successors, (11680), 7956 states have internal predecessors, (11680), 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) [2023-04-01 06:34:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 11683 transitions. [2023-04-01 06:34:33,323 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 11683 transitions. Word has length 72 [2023-04-01 06:34:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:33,323 INFO L495 AbstractCegarLoop]: Abstraction has 7960 states and 11683 transitions. [2023-04-01 06:34:33,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-04-01 06:34:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 11683 transitions. [2023-04-01 06:34:33,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:34:33,324 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:33,324 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] [2023-04-01 06:34:33,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 06:34:33,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:33,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -816446206, now seen corresponding path program 1 times [2023-04-01 06:34:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580328081] [2023-04-01 06:34:33,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:35,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:35,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580328081] [2023-04-01 06:34:35,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580328081] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:35,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:35,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:34:35,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017497288] [2023-04-01 06:34:35,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:35,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:34:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:35,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:34:35,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:34:35,167 INFO L87 Difference]: Start difference. First operand 7960 states and 11683 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:39,594 INFO L93 Difference]: Finished difference Result 17975 states and 26311 transitions. [2023-04-01 06:34:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 06:34:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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 73 [2023-04-01 06:34:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:39,640 INFO L225 Difference]: With dead ends: 17975 [2023-04-01 06:34:39,640 INFO L226 Difference]: Without dead ends: 17973 [2023-04-01 06:34:39,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=372, Invalid=1520, Unknown=0, NotChecked=0, Total=1892 [2023-04-01 06:34:39,646 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1982 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:39,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1982 Valid, 2485 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 06:34:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2023-04-01 06:34:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 14245. [2023-04-01 06:34:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14245 states, 14241 states have (on average 1.461484446316972) internal successors, (20813), 14241 states have internal predecessors, (20813), 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) [2023-04-01 06:34:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14245 states to 14245 states and 20816 transitions. [2023-04-01 06:34:41,448 INFO L78 Accepts]: Start accepts. Automaton has 14245 states and 20816 transitions. Word has length 73 [2023-04-01 06:34:41,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:41,448 INFO L495 AbstractCegarLoop]: Abstraction has 14245 states and 20816 transitions. [2023-04-01 06:34:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 14245 states and 20816 transitions. [2023-04-01 06:34:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:34:41,449 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:41,449 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] [2023-04-01 06:34:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 06:34:41,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:41,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -404481502, now seen corresponding path program 1 times [2023-04-01 06:34:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252311732] [2023-04-01 06:34:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:42,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:42,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252311732] [2023-04-01 06:34:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252311732] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:42,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:34:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37363875] [2023-04-01 06:34:42,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:42,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:34:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:34:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:34:42,889 INFO L87 Difference]: Start difference. First operand 14245 states and 20816 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:46,954 INFO L93 Difference]: Finished difference Result 17403 states and 25343 transitions. [2023-04-01 06:34:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 06:34:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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 73 [2023-04-01 06:34:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:46,997 INFO L225 Difference]: With dead ends: 17403 [2023-04-01 06:34:46,997 INFO L226 Difference]: Without dead ends: 17401 [2023-04-01 06:34:47,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=330, Invalid=1230, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 06:34:47,003 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1128 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:47,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2539 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 06:34:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17401 states. [2023-04-01 06:34:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17401 to 14271. [2023-04-01 06:34:48,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14271 states, 14267 states have (on average 1.4610639938319199) internal successors, (20845), 14267 states have internal predecessors, (20845), 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) [2023-04-01 06:34:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14271 states to 14271 states and 20848 transitions. [2023-04-01 06:34:48,829 INFO L78 Accepts]: Start accepts. Automaton has 14271 states and 20848 transitions. Word has length 73 [2023-04-01 06:34:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:48,829 INFO L495 AbstractCegarLoop]: Abstraction has 14271 states and 20848 transitions. [2023-04-01 06:34:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14271 states and 20848 transitions. [2023-04-01 06:34:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:34:48,831 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:48,831 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] [2023-04-01 06:34:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 06:34:48,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:48,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 862256578, now seen corresponding path program 1 times [2023-04-01 06:34:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656527849] [2023-04-01 06:34:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:50,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:50,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656527849] [2023-04-01 06:34:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656527849] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:50,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:34:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740278535] [2023-04-01 06:34:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:50,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:34:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:34:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:34:50,139 INFO L87 Difference]: Start difference. First operand 14271 states and 20848 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:34:54,471 INFO L93 Difference]: Finished difference Result 20827 states and 30340 transitions. [2023-04-01 06:34:54,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 06:34:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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 73 [2023-04-01 06:34:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:34:54,498 INFO L225 Difference]: With dead ends: 20827 [2023-04-01 06:34:54,498 INFO L226 Difference]: Without dead ends: 18873 [2023-04-01 06:34:54,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 06:34:54,503 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 1217 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 3550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:34:54,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2760 Invalid, 3550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 06:34:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18873 states. [2023-04-01 06:34:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18873 to 14290. [2023-04-01 06:34:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14290 states, 14286 states have (on average 1.4606607867842643) internal successors, (20867), 14286 states have internal predecessors, (20867), 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) [2023-04-01 06:34:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14290 states to 14290 states and 20870 transitions. [2023-04-01 06:34:56,365 INFO L78 Accepts]: Start accepts. Automaton has 14290 states and 20870 transitions. Word has length 73 [2023-04-01 06:34:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:34:56,366 INFO L495 AbstractCegarLoop]: Abstraction has 14290 states and 20870 transitions. [2023-04-01 06:34:56,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:34:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 14290 states and 20870 transitions. [2023-04-01 06:34:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:34:56,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:34:56,367 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] [2023-04-01 06:34:56,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 06:34:56,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:34:56,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:34:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1248698722, now seen corresponding path program 1 times [2023-04-01 06:34:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:34:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430101524] [2023-04-01 06:34:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:34:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:34:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:34:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:34:57,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:34:57,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430101524] [2023-04-01 06:34:57,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430101524] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:34:57,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:34:57,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-01 06:34:57,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977282921] [2023-04-01 06:34:57,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:34:57,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-01 06:34:57,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:34:57,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-01 06:34:57,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-04-01 06:34:57,142 INFO L87 Difference]: Start difference. First operand 14290 states and 20870 transitions. Second operand has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 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) [2023-04-01 06:35:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:00,543 INFO L93 Difference]: Finished difference Result 21685 states and 31631 transitions. [2023-04-01 06:35:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 06:35:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 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 73 [2023-04-01 06:35:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:00,575 INFO L225 Difference]: With dead ends: 21685 [2023-04-01 06:35:00,576 INFO L226 Difference]: Without dead ends: 21683 [2023-04-01 06:35:00,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-04-01 06:35:00,580 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 852 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:00,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2986 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 06:35:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21683 states. [2023-04-01 06:35:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21683 to 14312. [2023-04-01 06:35:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14312 states, 14308 states have (on average 1.4603019289907744) internal successors, (20894), 14308 states have internal predecessors, (20894), 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) [2023-04-01 06:35:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14312 states to 14312 states and 20897 transitions. [2023-04-01 06:35:02,623 INFO L78 Accepts]: Start accepts. Automaton has 14312 states and 20897 transitions. Word has length 73 [2023-04-01 06:35:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:02,624 INFO L495 AbstractCegarLoop]: Abstraction has 14312 states and 20897 transitions. [2023-04-01 06:35:02,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 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) [2023-04-01 06:35:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 14312 states and 20897 transitions. [2023-04-01 06:35:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-01 06:35:02,626 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:02,627 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] [2023-04-01 06:35:02,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 06:35:02,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:35:02,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1669977950, now seen corresponding path program 1 times [2023-04-01 06:35:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470710507] [2023-04-01 06:35:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:02,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:03,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470710507] [2023-04-01 06:35:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470710507] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:03,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:03,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-04-01 06:35:03,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127424544] [2023-04-01 06:35:03,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:03,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-04-01 06:35:03,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-04-01 06:35:03,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-04-01 06:35:03,837 INFO L87 Difference]: Start difference. First operand 14312 states and 20897 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:35:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:09,248 INFO L93 Difference]: Finished difference Result 26801 states and 39206 transitions. [2023-04-01 06:35:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-01 06:35:09,248 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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 73 [2023-04-01 06:35:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:09,289 INFO L225 Difference]: With dead ends: 26801 [2023-04-01 06:35:09,289 INFO L226 Difference]: Without dead ends: 26799 [2023-04-01 06:35:09,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=308, Invalid=1252, Unknown=0, NotChecked=0, Total=1560 [2023-04-01 06:35:09,295 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1204 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:09,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 2766 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-01 06:35:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26799 states. [2023-04-01 06:35:11,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26799 to 15839. [2023-04-01 06:35:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15839 states, 15835 states have (on average 1.461319861067256) internal successors, (23140), 15835 states have internal predecessors, (23140), 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) [2023-04-01 06:35:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15839 states to 15839 states and 23143 transitions. [2023-04-01 06:35:11,638 INFO L78 Accepts]: Start accepts. Automaton has 15839 states and 23143 transitions. Word has length 73 [2023-04-01 06:35:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:11,639 INFO L495 AbstractCegarLoop]: Abstraction has 15839 states and 23143 transitions. [2023-04-01 06:35:11,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 states have internal predecessors, (70), 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) [2023-04-01 06:35:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 15839 states and 23143 transitions. [2023-04-01 06:35:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:35:11,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:11,640 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] [2023-04-01 06:35:11,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 06:35:11,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:35:11,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash 275904855, now seen corresponding path program 1 times [2023-04-01 06:35:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:11,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966340140] [2023-04-01 06:35:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:12,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966340140] [2023-04-01 06:35:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966340140] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-01 06:35:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755466060] [2023-04-01 06:35:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:35:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:35:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:35:12,613 INFO L87 Difference]: Start difference. First operand 15839 states and 23143 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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) [2023-04-01 06:35:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:17,937 INFO L93 Difference]: Finished difference Result 32112 states and 46866 transitions. [2023-04-01 06:35:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:35:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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 75 [2023-04-01 06:35:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:17,995 INFO L225 Difference]: With dead ends: 32112 [2023-04-01 06:35:17,995 INFO L226 Difference]: Without dead ends: 32110 [2023-04-01 06:35:18,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2023-04-01 06:35:18,005 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 939 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:18,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1731 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:35:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32110 states. [2023-04-01 06:35:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32110 to 15852. [2023-04-01 06:35:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15852 states, 15848 states have (on average 1.46113074204947) internal successors, (23156), 15848 states have internal predecessors, (23156), 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) [2023-04-01 06:35:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15852 states to 15852 states and 23159 transitions. [2023-04-01 06:35:20,671 INFO L78 Accepts]: Start accepts. Automaton has 15852 states and 23159 transitions. Word has length 75 [2023-04-01 06:35:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:20,671 INFO L495 AbstractCegarLoop]: Abstraction has 15852 states and 23159 transitions. [2023-04-01 06:35:20,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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) [2023-04-01 06:35:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15852 states and 23159 transitions. [2023-04-01 06:35:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:35:20,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:20,673 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] [2023-04-01 06:35:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 06:35:20,673 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:35:20,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1542642935, now seen corresponding path program 1 times [2023-04-01 06:35:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933296140] [2023-04-01 06:35:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:20,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 06:35:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 06:35:21,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 06:35:21,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933296140] [2023-04-01 06:35:21,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933296140] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 06:35:21,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 06:35:21,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-01 06:35:21,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069289373] [2023-04-01 06:35:21,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 06:35:21,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 06:35:21,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 06:35:21,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 06:35:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 06:35:21,469 INFO L87 Difference]: Start difference. First operand 15852 states and 23159 transitions. Second operand has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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) [2023-04-01 06:35:26,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 06:35:26,499 INFO L93 Difference]: Finished difference Result 33101 states and 48276 transitions. [2023-04-01 06:35:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 06:35:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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 75 [2023-04-01 06:35:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 06:35:26,544 INFO L225 Difference]: With dead ends: 33101 [2023-04-01 06:35:26,544 INFO L226 Difference]: Without dead ends: 29131 [2023-04-01 06:35:26,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2023-04-01 06:35:26,558 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 982 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 06:35:26,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1345 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 06:35:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29131 states. [2023-04-01 06:35:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29131 to 21045. [2023-04-01 06:35:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21045 states, 21041 states have (on average 1.4563946580485718) internal successors, (30644), 21041 states have internal predecessors, (30644), 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) [2023-04-01 06:35:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21045 states to 21045 states and 30647 transitions. [2023-04-01 06:35:30,290 INFO L78 Accepts]: Start accepts. Automaton has 21045 states and 30647 transitions. Word has length 75 [2023-04-01 06:35:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 06:35:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 21045 states and 30647 transitions. [2023-04-01 06:35:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 states have internal predecessors, (72), 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) [2023-04-01 06:35:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 21045 states and 30647 transitions. [2023-04-01 06:35:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-04-01 06:35:30,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 06:35:30,292 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] [2023-04-01 06:35:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 06:35:30,292 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 06:35:30,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 06:35:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1929085079, now seen corresponding path program 1 times [2023-04-01 06:35:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 06:35:30,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844803598] [2023-04-01 06:35:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 06:35:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 06:35:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat