/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.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:44:47,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:44:47,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:44:47,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:44:47,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:44:47,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:44:47,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:44:47,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:44:47,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:44:47,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:44:47,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:44:47,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:44:47,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:44:47,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:44:47,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:44:47,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:44:47,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:44:47,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:44:47,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:44:47,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:44:47,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:44:47,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:44:47,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:44:47,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:44:47,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:44:47,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:44:47,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:44:47,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:44:47,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:44:47,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:44:47,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:44:47,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:44:47,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:44:47,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:44:47,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:44:47,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:44:47,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:44:47,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:44:47,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:44:47,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:44:47,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:44:47,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 02:44:47,696 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:44:47,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:44:47,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:44:47,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:44:47,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:44:47,698 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:44:47,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:44:47,699 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:44:47,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:44:47,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:44:47,699 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:44:47,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:44:47,699 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:44:47,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:44:47,705 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:44:47,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:44:47,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:44:47,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:44:47,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:47,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:44:47,706 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:44:47,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:44:47,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:44:47,707 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:44:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:44:47,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:44:47,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:44:47,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:44:47,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:44:47,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:44:47,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:44:47,910 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:44:47,911 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:44:47,911 INFO L432 ainManager$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.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-03 02:44:49,071 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:44:49,474 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:44:49,475 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-03 02:44:49,518 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bed89179a/974e10211468418b99c1f9339e81948c/FLAG4d8958a0c [2023-04-03 02:44:49,531 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bed89179a/974e10211468418b99c1f9339e81948c [2023-04-03 02:44:49,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:44:49,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:44:49,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:49,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:44:49,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:44:49,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:49" (1/1) ... [2023-04-03 02:44:49,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1433ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:49, skipping insertion in model container [2023-04-03 02:44:49,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:44:49" (1/1) ... [2023-04-03 02:44:49,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:44:49,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:44:50,137 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.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2023-04-03 02:44:51,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:51,052 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:44:51,104 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.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2023-04-03 02:44:51,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:44:51,793 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:44:51,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51 WrapperNode [2023-04-03 02:44:51,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:44:51,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:44:51,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:44:51,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:44:51,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:51,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:51,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:51,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:44:52,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:44:52,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:44:52,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:44:52,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (1/1) ... [2023-04-03 02:44:52,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:44:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:44:52,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 02:44:52,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 02:44:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:44:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:44:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:44:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:44:52,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:44:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:44:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:44:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:44:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:44:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:44:52,893 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:44:52,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:44:57,702 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:44:57,994 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:44:57,995 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:44:58,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:58 BoogieIcfgContainer [2023-04-03 02:44:58,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:44:58,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:44:58,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:44:58,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:44:58,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:44:49" (1/3) ... [2023-04-03 02:44:58,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23591acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:58, skipping insertion in model container [2023-04-03 02:44:58,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:44:51" (2/3) ... [2023-04-03 02:44:58,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23591acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:44:58, skipping insertion in model container [2023-04-03 02:44:58,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:44:58" (3/3) ... [2023-04-03 02:44:58,008 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-03 02:44:58,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:44:58,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 02:44:58,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:44:58,221 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;@334f1507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:44:58,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 02:44:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 2820 states have (on average 1.9102836879432623) internal successors, (5387), 2821 states have internal predecessors, (5387), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-03 02:44:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:44:58,257 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:58,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:58,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:44:58,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash 607146581, now seen corresponding path program 1 times [2023-04-03 02:44:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:58,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901084637] [2023-04-03 02:44:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:58,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:44:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:44:59,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:44:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901084637] [2023-04-03 02:44:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901084637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:44:59,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:44:59,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:44:59,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91276050] [2023-04-03 02:44:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:44:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:44:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:44:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:44:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:59,196 INFO L87 Difference]: Start difference. First operand has 2826 states, 2820 states have (on average 1.9102836879432623) internal successors, (5387), 2821 states have internal predecessors, (5387), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:44:59,566 INFO L93 Difference]: Finished difference Result 3268 states and 6120 transitions. [2023-04-03 02:44:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:44:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:44:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:44:59,590 INFO L225 Difference]: With dead ends: 3268 [2023-04-03 02:44:59,590 INFO L226 Difference]: Without dead ends: 3041 [2023-04-03 02:44:59,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:44:59,597 INFO L413 NwaCegarLoop]: 5393 mSDtfsCounter, 2646 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2646 SdHoareTripleChecker+Valid, 8392 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:44:59,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2646 Valid, 8392 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:44:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2023-04-03 02:44:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3039. [2023-04-03 02:44:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3039 states, 3035 states have (on average 1.272158154859967) internal successors, (3861), 3035 states have internal predecessors, (3861), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:59,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3864 transitions. [2023-04-03 02:44:59,717 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3864 transitions. Word has length 82 [2023-04-03 02:44:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:44:59,717 INFO L495 AbstractCegarLoop]: Abstraction has 3039 states and 3864 transitions. [2023-04-03 02:44:59,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:44:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3864 transitions. [2023-04-03 02:44:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:44:59,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:44:59,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:44:59,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:44:59,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:44:59,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:44:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 616170822, now seen corresponding path program 1 times [2023-04-03 02:44:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:44:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053893832] [2023-04-03 02:44:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:44:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:44:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:00,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053893832] [2023-04-03 02:45:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053893832] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:45:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313302786] [2023-04-03 02:45:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:00,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:45:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:45:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:45:00,103 INFO L87 Difference]: Start difference. First operand 3039 states and 3864 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:01,633 INFO L93 Difference]: Finished difference Result 4169 states and 5292 transitions. [2023-04-03 02:45:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:45:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:45:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:01,641 INFO L225 Difference]: With dead ends: 4169 [2023-04-03 02:45:01,641 INFO L226 Difference]: Without dead ends: 2906 [2023-04-03 02:45:01,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:01,645 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 9183 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9183 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:01,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9183 Valid, 1828 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 02:45:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2023-04-03 02:45:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2904. [2023-04-03 02:45:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2900 states have (on average 1.2317241379310344) internal successors, (3572), 2900 states have internal predecessors, (3572), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 3575 transitions. [2023-04-03 02:45:01,713 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 3575 transitions. Word has length 82 [2023-04-03 02:45:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:01,714 INFO L495 AbstractCegarLoop]: Abstraction has 2904 states and 3575 transitions. [2023-04-03 02:45:01,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 3575 transitions. [2023-04-03 02:45:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:45:01,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:01,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:45:01,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:01,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 984650115, now seen corresponding path program 1 times [2023-04-03 02:45:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990679598] [2023-04-03 02:45:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:01,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990679598] [2023-04-03 02:45:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990679598] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:01,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:45:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010605078] [2023-04-03 02:45:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:45:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:45:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:01,939 INFO L87 Difference]: Start difference. First operand 2904 states and 3575 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:02,250 INFO L93 Difference]: Finished difference Result 3836 states and 4913 transitions. [2023-04-03 02:45:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:45:02,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:45:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:02,259 INFO L225 Difference]: With dead ends: 3836 [2023-04-03 02:45:02,259 INFO L226 Difference]: Without dead ends: 3443 [2023-04-03 02:45:02,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:02,264 INFO L413 NwaCegarLoop]: 2990 mSDtfsCounter, 1517 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 4552 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:02,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 4552 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:45:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2023-04-03 02:45:02,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 3441. [2023-04-03 02:45:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3437 states have (on average 1.2601105615362234) internal successors, (4331), 3437 states have internal predecessors, (4331), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4334 transitions. [2023-04-03 02:45:02,364 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4334 transitions. Word has length 82 [2023-04-03 02:45:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:02,365 INFO L495 AbstractCegarLoop]: Abstraction has 3441 states and 4334 transitions. [2023-04-03 02:45:02,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4334 transitions. [2023-04-03 02:45:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 02:45:02,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:02,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:45:02,371 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:02,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1940316790, now seen corresponding path program 1 times [2023-04-03 02:45:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949214894] [2023-04-03 02:45:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:02,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949214894] [2023-04-03 02:45:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949214894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:45:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225837305] [2023-04-03 02:45:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:02,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:45:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:02,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:45:02,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:45:02,683 INFO L87 Difference]: Start difference. First operand 3441 states and 4334 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:03,790 INFO L93 Difference]: Finished difference Result 6266 states and 8158 transitions. [2023-04-03 02:45:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:45:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-03 02:45:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:03,799 INFO L225 Difference]: With dead ends: 6266 [2023-04-03 02:45:03,799 INFO L226 Difference]: Without dead ends: 3608 [2023-04-03 02:45:03,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:03,804 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 6915 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6915 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:03,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6915 Valid, 1521 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:45:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2023-04-03 02:45:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3606. [2023-04-03 02:45:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3602 states have (on average 1.3095502498611882) internal successors, (4717), 3602 states have internal predecessors, (4717), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 4720 transitions. [2023-04-03 02:45:03,979 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 4720 transitions. Word has length 82 [2023-04-03 02:45:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:03,979 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 4720 transitions. [2023-04-03 02:45:03,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 4720 transitions. [2023-04-03 02:45:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:45:03,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:03,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:45:03,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:03,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -772538559, now seen corresponding path program 1 times [2023-04-03 02:45:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933352851] [2023-04-03 02:45:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:04,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:04,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933352851] [2023-04-03 02:45:04,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933352851] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:04,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:04,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:45:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108495305] [2023-04-03 02:45:04,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:04,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:45:04,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:45:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:04,192 INFO L87 Difference]: Start difference. First operand 3606 states and 4720 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:04,577 INFO L93 Difference]: Finished difference Result 7295 states and 9784 transitions. [2023-04-03 02:45:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:45:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 83 [2023-04-03 02:45:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:04,591 INFO L225 Difference]: With dead ends: 7295 [2023-04-03 02:45:04,591 INFO L226 Difference]: Without dead ends: 5618 [2023-04-03 02:45:04,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:04,594 INFO L413 NwaCegarLoop]: 3014 mSDtfsCounter, 1951 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1951 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:04,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1951 Valid, 4309 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:45:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2023-04-03 02:45:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5616. [2023-04-03 02:45:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5616 states, 5612 states have (on average 1.3139700641482537) internal successors, (7374), 5612 states have internal predecessors, (7374), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5616 states to 5616 states and 7377 transitions. [2023-04-03 02:45:04,817 INFO L78 Accepts]: Start accepts. Automaton has 5616 states and 7377 transitions. Word has length 83 [2023-04-03 02:45:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:04,818 INFO L495 AbstractCegarLoop]: Abstraction has 5616 states and 7377 transitions. [2023-04-03 02:45:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5616 states and 7377 transitions. [2023-04-03 02:45:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-03 02:45:04,830 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:04,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:04,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:45:04,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:04,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:04,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1970470166, now seen corresponding path program 1 times [2023-04-03 02:45:04,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:04,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118098126] [2023-04-03 02:45:04,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:04,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:05,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:05,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118098126] [2023-04-03 02:45:05,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118098126] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:05,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:05,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:45:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350314623] [2023-04-03 02:45:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:45:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:45:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:45:05,080 INFO L87 Difference]: Start difference. First operand 5616 states and 7377 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:06,134 INFO L93 Difference]: Finished difference Result 12274 states and 16560 transitions. [2023-04-03 02:45:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:45:06,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 83 [2023-04-03 02:45:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:06,155 INFO L225 Difference]: With dead ends: 12274 [2023-04-03 02:45:06,155 INFO L226 Difference]: Without dead ends: 7492 [2023-04-03 02:45:06,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:06,163 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 5277 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:06,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5277 Valid, 1159 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:45:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2023-04-03 02:45:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7490. [2023-04-03 02:45:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7490 states, 7486 states have (on average 1.3471814052898745) internal successors, (10085), 7486 states have internal predecessors, (10085), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7490 states to 7490 states and 10088 transitions. [2023-04-03 02:45:06,580 INFO L78 Accepts]: Start accepts. Automaton has 7490 states and 10088 transitions. Word has length 83 [2023-04-03 02:45:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:06,581 INFO L495 AbstractCegarLoop]: Abstraction has 7490 states and 10088 transitions. [2023-04-03 02:45:06,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7490 states and 10088 transitions. [2023-04-03 02:45:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:45:06,589 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:06,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:45:06,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:06,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -148178817, now seen corresponding path program 1 times [2023-04-03 02:45:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423653508] [2023-04-03 02:45:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:06,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423653508] [2023-04-03 02:45:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423653508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:45:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651410803] [2023-04-03 02:45:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:45:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:45:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:06,778 INFO L87 Difference]: Start difference. First operand 7490 states and 10088 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:07,519 INFO L93 Difference]: Finished difference Result 17316 states and 23719 transitions. [2023-04-03 02:45:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:45:07,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 84 [2023-04-03 02:45:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:07,558 INFO L225 Difference]: With dead ends: 17316 [2023-04-03 02:45:07,558 INFO L226 Difference]: Without dead ends: 12303 [2023-04-03 02:45:07,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:07,571 INFO L413 NwaCegarLoop]: 2173 mSDtfsCounter, 1371 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:07,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 3206 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:45:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12303 states. [2023-04-03 02:45:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12303 to 12301. [2023-04-03 02:45:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12301 states, 12297 states have (on average 1.3485402943807432) internal successors, (16583), 12297 states have internal predecessors, (16583), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12301 states to 12301 states and 16586 transitions. [2023-04-03 02:45:08,498 INFO L78 Accepts]: Start accepts. Automaton has 12301 states and 16586 transitions. Word has length 84 [2023-04-03 02:45:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:08,499 INFO L495 AbstractCegarLoop]: Abstraction has 12301 states and 16586 transitions. [2023-04-03 02:45:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 12301 states and 16586 transitions. [2023-04-03 02:45:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-03 02:45:08,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:08,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:45:08,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:08,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2024612299, now seen corresponding path program 1 times [2023-04-03 02:45:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:08,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001636477] [2023-04-03 02:45:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:08,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:08,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001636477] [2023-04-03 02:45:08,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001636477] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:08,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:08,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:45:08,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534770254] [2023-04-03 02:45:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:08,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:45:08,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:45:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:45:08,777 INFO L87 Difference]: Start difference. First operand 12301 states and 16586 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:10,744 INFO L93 Difference]: Finished difference Result 30499 states and 41805 transitions. [2023-04-03 02:45:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:45:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 84 [2023-04-03 02:45:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:10,788 INFO L225 Difference]: With dead ends: 30499 [2023-04-03 02:45:10,788 INFO L226 Difference]: Without dead ends: 19473 [2023-04-03 02:45:10,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:10,806 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 4457 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:10,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 965 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 02:45:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2023-04-03 02:45:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 19471. [2023-04-03 02:45:12,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19471 states, 19467 states have (on average 1.363949247444393) internal successors, (26552), 19467 states have internal predecessors, (26552), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19471 states to 19471 states and 26555 transitions. [2023-04-03 02:45:12,255 INFO L78 Accepts]: Start accepts. Automaton has 19471 states and 26555 transitions. Word has length 84 [2023-04-03 02:45:12,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:12,255 INFO L495 AbstractCegarLoop]: Abstraction has 19471 states and 26555 transitions. [2023-04-03 02:45:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 19471 states and 26555 transitions. [2023-04-03 02:45:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-03 02:45:12,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:12,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:45:12,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:12,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 160724391, now seen corresponding path program 1 times [2023-04-03 02:45:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109170047] [2023-04-03 02:45:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:12,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109170047] [2023-04-03 02:45:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109170047] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:12,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:45:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261481789] [2023-04-03 02:45:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:45:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:45:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:45:12,557 INFO L87 Difference]: Start difference. First operand 19471 states and 26555 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:15,811 INFO L93 Difference]: Finished difference Result 53662 states and 73892 transitions. [2023-04-03 02:45:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:45:15,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 85 [2023-04-03 02:45:15,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:15,884 INFO L225 Difference]: With dead ends: 53662 [2023-04-03 02:45:15,884 INFO L226 Difference]: Without dead ends: 34809 [2023-04-03 02:45:15,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:15,918 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 3624 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3624 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3624 Valid, 858 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 02:45:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34809 states. [2023-04-03 02:45:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34809 to 34807. [2023-04-03 02:45:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34807 states, 34803 states have (on average 1.3654282676780738) internal successors, (47521), 34803 states have internal predecessors, (47521), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:19,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34807 states to 34807 states and 47524 transitions. [2023-04-03 02:45:19,152 INFO L78 Accepts]: Start accepts. Automaton has 34807 states and 47524 transitions. Word has length 85 [2023-04-03 02:45:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:19,152 INFO L495 AbstractCegarLoop]: Abstraction has 34807 states and 47524 transitions. [2023-04-03 02:45:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 34807 states and 47524 transitions. [2023-04-03 02:45:19,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-03 02:45:19,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:19,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:19,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:45:19,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:19,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:19,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1560732335, now seen corresponding path program 1 times [2023-04-03 02:45:19,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:19,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444025728] [2023-04-03 02:45:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:19,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:19,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444025728] [2023-04-03 02:45:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444025728] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:19,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:19,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:45:19,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445411785] [2023-04-03 02:45:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:19,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:45:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:45:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:19,378 INFO L87 Difference]: Start difference. First operand 34807 states and 47524 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:45:24,986 INFO L93 Difference]: Finished difference Result 96172 states and 131417 transitions. [2023-04-03 02:45:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:45:24,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 86 [2023-04-03 02:45:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:45:25,133 INFO L225 Difference]: With dead ends: 96172 [2023-04-03 02:45:25,133 INFO L226 Difference]: Without dead ends: 62635 [2023-04-03 02:45:25,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:45:25,196 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 871 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 02:45:25,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2134 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 02:45:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62635 states. [2023-04-03 02:45:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62635 to 62633. [2023-04-03 02:45:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62633 states, 62629 states have (on average 1.3544045090932315) internal successors, (84825), 62629 states have internal predecessors, (84825), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:31,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62633 states to 62633 states and 84828 transitions. [2023-04-03 02:45:31,631 INFO L78 Accepts]: Start accepts. Automaton has 62633 states and 84828 transitions. Word has length 86 [2023-04-03 02:45:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:45:31,631 INFO L495 AbstractCegarLoop]: Abstraction has 62633 states and 84828 transitions. [2023-04-03 02:45:31,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:45:31,632 INFO L276 IsEmpty]: Start isEmpty. Operand 62633 states and 84828 transitions. [2023-04-03 02:45:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 02:45:31,654 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:45:31,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:45:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:45:31,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:45:31,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:45:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash -941347876, now seen corresponding path program 1 times [2023-04-03 02:45:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:45:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000294114] [2023-04-03 02:45:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:45:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:45:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:45:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:45:32,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:45:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000294114] [2023-04-03 02:45:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000294114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:45:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:45:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:45:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141627404] [2023-04-03 02:45:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:45:32,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:45:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:45:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:45:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:45:32,089 INFO L87 Difference]: Start difference. First operand 62633 states and 84828 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:46:09,455 INFO L93 Difference]: Finished difference Result 350451 states and 479602 transitions. [2023-04-03 02:46:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:46:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 87 [2023-04-03 02:46:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:46:10,475 INFO L225 Difference]: With dead ends: 350451 [2023-04-03 02:46:10,475 INFO L226 Difference]: Without dead ends: 322935 [2023-04-03 02:46:10,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:46:10,602 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 6438 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6438 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 02:46:10,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6438 Valid, 1646 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 02:46:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322935 states. [2023-04-03 02:46:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322935 to 62769. [2023-04-03 02:46:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62769 states, 62765 states have (on average 1.3542738787540827) internal successors, (85001), 62765 states have internal predecessors, (85001), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62769 states to 62769 states and 85004 transitions. [2023-04-03 02:46:22,714 INFO L78 Accepts]: Start accepts. Automaton has 62769 states and 85004 transitions. Word has length 87 [2023-04-03 02:46:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:46:22,715 INFO L495 AbstractCegarLoop]: Abstraction has 62769 states and 85004 transitions. [2023-04-03 02:46:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:46:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 62769 states and 85004 transitions. [2023-04-03 02:46:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 02:46:22,734 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:46:22,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:46:22,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:46:22,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:46:22,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:46:22,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2023143631, now seen corresponding path program 1 times [2023-04-03 02:46:22,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:46:22,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108514316] [2023-04-03 02:46:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:46:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:46:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:46:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:46:23,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:46:23,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108514316] [2023-04-03 02:46:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108514316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:46:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:46:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:46:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021786545] [2023-04-03 02:46:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:46:23,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:46:23,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:46:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:46:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:46:23,094 INFO L87 Difference]: Start difference. First operand 62769 states and 85004 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:47:12,015 INFO L93 Difference]: Finished difference Result 296003 states and 402636 transitions. [2023-04-03 02:47:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:47:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 87 [2023-04-03 02:47:12,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:47:12,848 INFO L225 Difference]: With dead ends: 296003 [2023-04-03 02:47:12,848 INFO L226 Difference]: Without dead ends: 269201 [2023-04-03 02:47:12,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:47:12,951 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 5716 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5716 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:47:12,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5716 Valid, 1611 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:47:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269201 states. [2023-04-03 02:47:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269201 to 63331. [2023-04-03 02:47:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63331 states, 63327 states have (on average 1.354130149857091) internal successors, (85753), 63327 states have internal predecessors, (85753), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63331 states to 63331 states and 85756 transitions. [2023-04-03 02:47:26,484 INFO L78 Accepts]: Start accepts. Automaton has 63331 states and 85756 transitions. Word has length 87 [2023-04-03 02:47:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:47:26,484 INFO L495 AbstractCegarLoop]: Abstraction has 63331 states and 85756 transitions. [2023-04-03 02:47:26,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:47:26,488 INFO L276 IsEmpty]: Start isEmpty. Operand 63331 states and 85756 transitions. [2023-04-03 02:47:26,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 02:47:26,505 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:47:26,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:47:26,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 02:47:26,505 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:47:26,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:47:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1154119124, now seen corresponding path program 1 times [2023-04-03 02:47:26,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:47:26,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049798528] [2023-04-03 02:47:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:47:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:47:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:47:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:47:26,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:47:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049798528] [2023-04-03 02:47:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049798528] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:47:26,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:47:26,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:47:26,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573400891] [2023-04-03 02:47:26,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:47:26,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:47:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:47:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:47:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:47:26,854 INFO L87 Difference]: Start difference. First operand 63331 states and 85756 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:48:35,011 INFO L93 Difference]: Finished difference Result 324355 states and 442607 transitions. [2023-04-03 02:48:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-03 02:48:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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 87 [2023-04-03 02:48:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:48:35,763 INFO L225 Difference]: With dead ends: 324355 [2023-04-03 02:48:35,764 INFO L226 Difference]: Without dead ends: 296905 [2023-04-03 02:48:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-04-03 02:48:36,061 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 5980 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 02:48:36,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5980 Valid, 1630 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 02:48:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296905 states. [2023-04-03 02:48:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296905 to 63643. [2023-04-03 02:48:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63643 states, 63639 states have (on average 1.3539653357218058) internal successors, (86165), 63639 states have internal predecessors, (86165), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63643 states to 63643 states and 86168 transitions. [2023-04-03 02:48:52,218 INFO L78 Accepts]: Start accepts. Automaton has 63643 states and 86168 transitions. Word has length 87 [2023-04-03 02:48:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:48:52,218 INFO L495 AbstractCegarLoop]: Abstraction has 63643 states and 86168 transitions. [2023-04-03 02:48:52,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-03 02:48:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 63643 states and 86168 transitions. [2023-04-03 02:48:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-03 02:48:52,236 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:48:52,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 02:48:52,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 02:48:52,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:48:52,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:48:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1464573769, now seen corresponding path program 1 times [2023-04-03 02:48:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:48:52,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599124704] [2023-04-03 02:48:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:48:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:48:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:48:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:48:52,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:48:52,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599124704] [2023-04-03 02:48:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599124704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:48:52,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:48:52,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 02:48:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382137009] [2023-04-03 02:48:52,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:48:52,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 02:48:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:48:52,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 02:48:52,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 02:48:52,560 INFO L87 Difference]: Start difference. First operand 63643 states and 86168 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 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)