/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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 02:25:24,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 02:25:24,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 02:25:24,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 02:25:24,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 02:25:24,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 02:25:24,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 02:25:24,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 02:25:24,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 02:25:24,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 02:25:24,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 02:25:24,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 02:25:24,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 02:25:24,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 02:25:24,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 02:25:24,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 02:25:24,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 02:25:24,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 02:25:24,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 02:25:24,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 02:25:24,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 02:25:24,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 02:25:24,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 02:25:24,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 02:25:24,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 02:25:24,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 02:25:24,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 02:25:24,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 02:25:24,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 02:25:24,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 02:25:24,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 02:25:24,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 02:25:24,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 02:25:24,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 02:25:24,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 02:25:24,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 02:25:24,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 02:25:24,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 02:25:24,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 02:25:24,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 02:25:24,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 02:25:24,388 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 02:25:24,408 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 02:25:24,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 02:25:24,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 02:25:24,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 02:25:24,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 02:25:24,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 02:25:24,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 02:25:24,411 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 02:25:24,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 02:25:24,411 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 02:25:24,411 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 02:25:24,411 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 02:25:24,411 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 02:25:24,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 02:25:24,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 02:25:24,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 02:25:24,413 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 02:25:24,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 02:25:24,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 02:25:24,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 02:25:24,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:25:24,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 02:25:24,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 02:25:24,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 02:25:24,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 02:25:24,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 02:25:24,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 02:25:24,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 02:25:24,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 02:25:24,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 02:25:24,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 02:25:24,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 02:25:24,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 02:25:24,632 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 02:25:24,633 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 02:25:24,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:25:25,863 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 02:25:26,154 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 02:25:26,155 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:25:26,177 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b516aecc/a73453274ec24ea2945c57c559a1b7e1/FLAG9b47d35b6 [2023-04-03 02:25:26,192 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b516aecc/a73453274ec24ea2945c57c559a1b7e1 [2023-04-03 02:25:26,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 02:25:26,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 02:25:26,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 02:25:26,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 02:25:26,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 02:25:26,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:25:26" (1/1) ... [2023-04-03 02:25:26,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4d3e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:26, skipping insertion in model container [2023-04-03 02:25:26,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 02:25:26" (1/1) ... [2023-04-03 02:25:26,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 02:25:26,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 02:25:26,668 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2023-04-03 02:25:26,703 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2023-04-03 02:25:26,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:25:26,820 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 02:25:26,945 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24323,24336] [2023-04-03 02:25:26,971 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_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28161,28174] [2023-04-03 02:25:27,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 02:25:27,088 INFO L208 MainTranslator]: Completed translation [2023-04-03 02:25:27,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27 WrapperNode [2023-04-03 02:25:27,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 02:25:27,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 02:25:27,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 02:25:27,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 02:25:27,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 02:25:27,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 02:25:27,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 02:25:27,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 02:25:27,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (1/1) ... [2023-04-03 02:25:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 02:25:27,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 02:25:27,326 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 02:25:27,349 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 02:25:27,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 02:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 02:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 02:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-03 02:25:27,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 02:25:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 02:25:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 02:25:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-03 02:25:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-03 02:25:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-03 02:25:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-03 02:25:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-03 02:25:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 02:25:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 02:25:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 02:25:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 02:25:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 02:25:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 02:25:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 02:25:27,601 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 02:25:27,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 02:25:28,954 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 02:25:29,469 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 02:25:29,469 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 02:25:29,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:25:29 BoogieIcfgContainer [2023-04-03 02:25:29,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 02:25:29,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 02:25:29,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 02:25:29,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 02:25:29,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 02:25:26" (1/3) ... [2023-04-03 02:25:29,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a69439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:25:29, skipping insertion in model container [2023-04-03 02:25:29,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 02:25:27" (2/3) ... [2023-04-03 02:25:29,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a69439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 02:25:29, skipping insertion in model container [2023-04-03 02:25:29,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 02:25:29" (3/3) ... [2023-04-03 02:25:29,482 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-04-03 02:25:29,497 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 02:25:29,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-04-03 02:25:29,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 02:25:29,572 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;@200f2441, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 02:25:29,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-04-03 02:25:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 503 states, 489 states have (on average 1.7157464212678937) internal successors, (839), 498 states have internal predecessors, (839), 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 02:25:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-04-03 02:25:29,610 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:29,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:29,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:29,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1655640928, now seen corresponding path program 1 times [2023-04-03 02:25:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703075619] [2023-04-03 02:25:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:31,071 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 02:25:31,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703075619] [2023-04-03 02:25:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703075619] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:31,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:31,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 02:25:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408229335] [2023-04-03 02:25:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:31,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 02:25:31,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 02:25:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 02:25:31,115 INFO L87 Difference]: Start difference. First operand has 503 states, 489 states have (on average 1.7157464212678937) internal successors, (839), 498 states have internal predecessors, (839), 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 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 02:25:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:31,522 INFO L93 Difference]: Finished difference Result 1473 states and 2476 transitions. [2023-04-03 02:25:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 02:25:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 214 [2023-04-03 02:25:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:31,546 INFO L225 Difference]: With dead ends: 1473 [2023-04-03 02:25:31,547 INFO L226 Difference]: Without dead ends: 961 [2023-04-03 02:25:31,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:31,554 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1826 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:31,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 2051 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-04-03 02:25:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 940. [2023-04-03 02:25:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 935 states have (on average 1.3957219251336899) internal successors, (1305), 936 states have internal predecessors, (1305), 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 02:25:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1308 transitions. [2023-04-03 02:25:31,657 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1308 transitions. Word has length 214 [2023-04-03 02:25:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:31,658 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1308 transitions. [2023-04-03 02:25:31,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 02:25:31,658 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1308 transitions. [2023-04-03 02:25:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-04-03 02:25:31,661 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:31,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 02:25:31,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:31,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1625012598, now seen corresponding path program 1 times [2023-04-03 02:25:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:31,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060612610] [2023-04-03 02:25:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:25:31,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060612610] [2023-04-03 02:25:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060612610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:31,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:25:31,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565967029] [2023-04-03 02:25:31,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:31,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:25:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:25:31,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:25:31,819 INFO L87 Difference]: Start difference. First operand 940 states and 1308 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 02:25:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:32,132 INFO L93 Difference]: Finished difference Result 2784 states and 3874 transitions. [2023-04-03 02:25:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:25:32,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 216 [2023-04-03 02:25:32,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:32,146 INFO L225 Difference]: With dead ends: 2784 [2023-04-03 02:25:32,146 INFO L226 Difference]: Without dead ends: 1865 [2023-04-03 02:25:32,150 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 02:25:32,151 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 670 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1910 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:25:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-04-03 02:25:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 943. [2023-04-03 02:25:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 938 states have (on average 1.394456289978678) internal successors, (1308), 939 states have internal predecessors, (1308), 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 02:25:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1311 transitions. [2023-04-03 02:25:32,239 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1311 transitions. Word has length 216 [2023-04-03 02:25:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:32,240 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1311 transitions. [2023-04-03 02:25:32,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 02:25:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1311 transitions. [2023-04-03 02:25:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-04-03 02:25:32,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:32,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 02:25:32,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:32,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 943619778, now seen corresponding path program 1 times [2023-04-03 02:25:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792979836] [2023-04-03 02:25:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:32,469 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 02:25:32,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792979836] [2023-04-03 02:25:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792979836] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:32,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:25:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683701956] [2023-04-03 02:25:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:25:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:25:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:25:32,472 INFO L87 Difference]: Start difference. First operand 943 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 02:25:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:32,811 INFO L93 Difference]: Finished difference Result 2662 states and 3681 transitions. [2023-04-03 02:25:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:25:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 216 [2023-04-03 02:25:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:32,819 INFO L225 Difference]: With dead ends: 2662 [2023-04-03 02:25:32,819 INFO L226 Difference]: Without dead ends: 1847 [2023-04-03 02:25:32,821 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 02:25:32,822 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 561 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:32,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1809 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:25:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2023-04-03 02:25:32,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1826. [2023-04-03 02:25:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1821 states have (on average 1.3931905546403076) internal successors, (2537), 1822 states have internal predecessors, (2537), 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 02:25:32,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2540 transitions. [2023-04-03 02:25:32,982 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2540 transitions. Word has length 216 [2023-04-03 02:25:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:32,983 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 2540 transitions. [2023-04-03 02:25:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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 02:25:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2540 transitions. [2023-04-03 02:25:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-04-03 02:25:32,987 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:32,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:32,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 02:25:32,988 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:32,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash 294352993, now seen corresponding path program 1 times [2023-04-03 02:25:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660116916] [2023-04-03 02:25:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:33,604 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 02:25:33,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660116916] [2023-04-03 02:25:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660116916] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:33,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:25:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260981258] [2023-04-03 02:25:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:33,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:25:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:25:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:33,606 INFO L87 Difference]: Start difference. First operand 1826 states and 2540 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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 02:25:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:34,151 INFO L93 Difference]: Finished difference Result 5268 states and 7307 transitions. [2023-04-03 02:25:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:25:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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 217 [2023-04-03 02:25:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:34,166 INFO L225 Difference]: With dead ends: 5268 [2023-04-03 02:25:34,166 INFO L226 Difference]: Without dead ends: 3461 [2023-04-03 02:25:34,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:34,176 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 2127 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 1633 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-04-03 02:25:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3440. [2023-04-03 02:25:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3435 states have (on average 1.3799126637554586) internal successors, (4740), 3436 states have internal predecessors, (4740), 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 02:25:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4743 transitions. [2023-04-03 02:25:34,504 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4743 transitions. Word has length 217 [2023-04-03 02:25:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:34,506 INFO L495 AbstractCegarLoop]: Abstraction has 3440 states and 4743 transitions. [2023-04-03 02:25:34,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 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 02:25:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4743 transitions. [2023-04-03 02:25:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-03 02:25:34,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:34,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 02:25:34,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:34,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1215314429, now seen corresponding path program 1 times [2023-04-03 02:25:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314034241] [2023-04-03 02:25:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:35,168 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 02:25:35,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314034241] [2023-04-03 02:25:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314034241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 02:25:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690989856] [2023-04-03 02:25:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:35,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 02:25:35,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:35,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 02:25:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 02:25:35,175 INFO L87 Difference]: Start difference. First operand 3440 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 02:25:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:36,125 INFO L93 Difference]: Finished difference Result 10020 states and 13784 transitions. [2023-04-03 02:25:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:25:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 218 [2023-04-03 02:25:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:36,151 INFO L225 Difference]: With dead ends: 10020 [2023-04-03 02:25:36,152 INFO L226 Difference]: Without dead ends: 6722 [2023-04-03 02:25:36,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:36,163 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1457 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:36,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 1630 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6722 states. [2023-04-03 02:25:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6722 to 6701. [2023-04-03 02:25:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6701 states, 6696 states have (on average 1.3712664277180406) internal successors, (9182), 6697 states have internal predecessors, (9182), 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 02:25:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6701 states to 6701 states and 9185 transitions. [2023-04-03 02:25:36,982 INFO L78 Accepts]: Start accepts. Automaton has 6701 states and 9185 transitions. Word has length 218 [2023-04-03 02:25:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:36,983 INFO L495 AbstractCegarLoop]: Abstraction has 6701 states and 9185 transitions. [2023-04-03 02:25:36,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 02:25:36,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6701 states and 9185 transitions. [2023-04-03 02:25:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-04-03 02:25:36,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:36,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:36,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 02:25:36,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:36,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash -983474172, now seen corresponding path program 1 times [2023-04-03 02:25:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119667062] [2023-04-03 02:25:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:36,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:37,582 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 02:25:37,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:37,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119667062] [2023-04-03 02:25:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119667062] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 02:25:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722399362] [2023-04-03 02:25:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:37,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 02:25:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 02:25:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 02:25:37,585 INFO L87 Difference]: Start difference. First operand 6701 states and 9185 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 02:25:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:39,108 INFO L93 Difference]: Finished difference Result 19619 states and 26834 transitions. [2023-04-03 02:25:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:25:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 220 [2023-04-03 02:25:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:39,170 INFO L225 Difference]: With dead ends: 19619 [2023-04-03 02:25:39,170 INFO L226 Difference]: Without dead ends: 13064 [2023-04-03 02:25:39,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:39,186 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 1436 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:39,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1607 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13064 states. [2023-04-03 02:25:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13064 to 13043. [2023-04-03 02:25:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 13038 states have (on average 1.3593342537198956) internal successors, (17723), 13039 states have internal predecessors, (17723), 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 02:25:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 17726 transitions. [2023-04-03 02:25:40,512 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 17726 transitions. Word has length 220 [2023-04-03 02:25:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:40,513 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 17726 transitions. [2023-04-03 02:25:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 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 02:25:40,513 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 17726 transitions. [2023-04-03 02:25:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-03 02:25:40,544 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:40,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:40,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 02:25:40,545 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:40,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:40,546 INFO L85 PathProgramCache]: Analyzing trace with hash 544511375, now seen corresponding path program 1 times [2023-04-03 02:25:40,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:40,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550404078] [2023-04-03 02:25:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:40,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:40,715 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 02:25:40,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:40,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550404078] [2023-04-03 02:25:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550404078] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:40,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:40,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:25:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498572812] [2023-04-03 02:25:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:25:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:25:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:25:40,718 INFO L87 Difference]: Start difference. First operand 13043 states and 17726 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 02:25:43,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:43,176 INFO L93 Difference]: Finished difference Result 37044 states and 50011 transitions. [2023-04-03 02:25:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:25:43,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 222 [2023-04-03 02:25:43,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:43,255 INFO L225 Difference]: With dead ends: 37044 [2023-04-03 02:25:43,256 INFO L226 Difference]: Without dead ends: 25567 [2023-04-03 02:25:43,285 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 02:25:43,286 INFO L413 NwaCegarLoop]: 1206 mSDtfsCounter, 544 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:43,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1822 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25567 states. [2023-04-03 02:25:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25567 to 25546. [2023-04-03 02:25:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25546 states, 25541 states have (on average 1.35194393328374) internal successors, (34530), 25542 states have internal predecessors, (34530), 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 02:25:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25546 states to 25546 states and 34533 transitions. [2023-04-03 02:25:45,439 INFO L78 Accepts]: Start accepts. Automaton has 25546 states and 34533 transitions. Word has length 222 [2023-04-03 02:25:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:45,439 INFO L495 AbstractCegarLoop]: Abstraction has 25546 states and 34533 transitions. [2023-04-03 02:25:45,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 02:25:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25546 states and 34533 transitions. [2023-04-03 02:25:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-04-03 02:25:45,488 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:45,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:45,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 02:25:45,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:45,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2019957409, now seen corresponding path program 1 times [2023-04-03 02:25:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:45,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147538398] [2023-04-03 02:25:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:45,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:45,637 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 02:25:45,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147538398] [2023-04-03 02:25:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147538398] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:45,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:45,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:25:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447473862] [2023-04-03 02:25:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:25:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:25:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:25:45,640 INFO L87 Difference]: Start difference. First operand 25546 states and 34533 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 02:25:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:50,632 INFO L93 Difference]: Finished difference Result 74695 states and 100709 transitions. [2023-04-03 02:25:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:25:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 222 [2023-04-03 02:25:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:50,802 INFO L225 Difference]: With dead ends: 74695 [2023-04-03 02:25:50,803 INFO L226 Difference]: Without dead ends: 50839 [2023-04-03 02:25:50,863 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 02:25:50,865 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 646 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:50,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1889 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50839 states. [2023-04-03 02:25:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50839 to 25579. [2023-04-03 02:25:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25579 states, 25574 states have (on average 1.3514897943223587) internal successors, (34563), 25575 states have internal predecessors, (34563), 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 02:25:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25579 states to 25579 states and 34566 transitions. [2023-04-03 02:25:53,784 INFO L78 Accepts]: Start accepts. Automaton has 25579 states and 34566 transitions. Word has length 222 [2023-04-03 02:25:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:25:53,785 INFO L495 AbstractCegarLoop]: Abstraction has 25579 states and 34566 transitions. [2023-04-03 02:25:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 02:25:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 25579 states and 34566 transitions. [2023-04-03 02:25:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-04-03 02:25:53,841 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:25:53,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:53,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 02:25:53,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:25:53,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:25:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1936378520, now seen corresponding path program 1 times [2023-04-03 02:25:53,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:25:53,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270729111] [2023-04-03 02:25:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:25:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:25:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:25:54,360 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 02:25:54,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:25:54,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270729111] [2023-04-03 02:25:54,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270729111] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:25:54,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:25:54,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 02:25:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807722531] [2023-04-03 02:25:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:25:54,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 02:25:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:25:54,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 02:25:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:54,363 INFO L87 Difference]: Start difference. First operand 25579 states and 34566 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 02:25:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:25:59,382 INFO L93 Difference]: Finished difference Result 74020 states and 99673 transitions. [2023-04-03 02:25:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:25:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 223 [2023-04-03 02:25:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:25:59,491 INFO L225 Difference]: With dead ends: 74020 [2023-04-03 02:25:59,491 INFO L226 Difference]: Without dead ends: 48645 [2023-04-03 02:25:59,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:25:59,551 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 1544 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:25:59,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2230 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:25:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48645 states. [2023-04-03 02:26:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48645 to 48624. [2023-04-03 02:26:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48624 states, 48619 states have (on average 1.33877702132911) internal successors, (65090), 48620 states have internal predecessors, (65090), 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 02:26:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48624 states to 48624 states and 65093 transitions. [2023-04-03 02:26:04,585 INFO L78 Accepts]: Start accepts. Automaton has 48624 states and 65093 transitions. Word has length 223 [2023-04-03 02:26:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:26:04,586 INFO L495 AbstractCegarLoop]: Abstraction has 48624 states and 65093 transitions. [2023-04-03 02:26:04,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 02:26:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 48624 states and 65093 transitions. [2023-04-03 02:26:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-04-03 02:26:04,639 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:26:04,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:04,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 02:26:04,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:26:04,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:26:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -697291136, now seen corresponding path program 1 times [2023-04-03 02:26:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:26:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639124856] [2023-04-03 02:26:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:26:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:26:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:26:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 02:26:05,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:26:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639124856] [2023-04-03 02:26:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639124856] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:26:05,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:26:05,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 02:26:05,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111237788] [2023-04-03 02:26:05,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:26:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 02:26:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:26:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 02:26:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 02:26:05,096 INFO L87 Difference]: Start difference. First operand 48624 states and 65093 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 02:26:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:26:14,915 INFO L93 Difference]: Finished difference Result 141560 states and 188873 transitions. [2023-04-03 02:26:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:26:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 224 [2023-04-03 02:26:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:26:15,072 INFO L225 Difference]: With dead ends: 141560 [2023-04-03 02:26:15,073 INFO L226 Difference]: Without dead ends: 95204 [2023-04-03 02:26:15,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:26:15,145 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 1447 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 02:26:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1626 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 02:26:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95204 states. [2023-04-03 02:26:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95204 to 95183. [2023-04-03 02:26:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95183 states, 95178 states have (on average 1.3308642753577506) internal successors, (126669), 95179 states have internal predecessors, (126669), 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 02:26:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95183 states to 95183 states and 126672 transitions. [2023-04-03 02:26:25,908 INFO L78 Accepts]: Start accepts. Automaton has 95183 states and 126672 transitions. Word has length 224 [2023-04-03 02:26:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:26:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 95183 states and 126672 transitions. [2023-04-03 02:26:25,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 02:26:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 95183 states and 126672 transitions. [2023-04-03 02:26:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-04-03 02:26:26,239 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:26:26,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:26,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 02:26:26,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:26:26,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:26:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1755030164, now seen corresponding path program 1 times [2023-04-03 02:26:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:26:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77746378] [2023-04-03 02:26:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:26:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:26:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:26:26,737 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 02:26:26,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:26:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77746378] [2023-04-03 02:26:26,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77746378] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:26:26,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:26:26,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 02:26:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742354267] [2023-04-03 02:26:26,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:26:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 02:26:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:26:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 02:26:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 02:26:26,740 INFO L87 Difference]: Start difference. First operand 95183 states and 126672 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 02:26:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:26:39,111 INFO L93 Difference]: Finished difference Result 207189 states and 275482 transitions. [2023-04-03 02:26:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 02:26:39,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 226 [2023-04-03 02:26:39,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:26:39,401 INFO L225 Difference]: With dead ends: 207189 [2023-04-03 02:26:39,401 INFO L226 Difference]: Without dead ends: 113511 [2023-04-03 02:26:39,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 02:26:39,480 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1420 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:26:39,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1597 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:26:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113511 states. [2023-04-03 02:26:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113511 to 97106. [2023-04-03 02:26:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97106 states, 97101 states have (on average 1.332365269152738) internal successors, (129374), 97102 states have internal predecessors, (129374), 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 02:26:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97106 states to 97106 states and 129377 transitions. [2023-04-03 02:26:50,768 INFO L78 Accepts]: Start accepts. Automaton has 97106 states and 129377 transitions. Word has length 226 [2023-04-03 02:26:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 02:26:50,768 INFO L495 AbstractCegarLoop]: Abstraction has 97106 states and 129377 transitions. [2023-04-03 02:26:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 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 02:26:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 97106 states and 129377 transitions. [2023-04-03 02:26:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-04-03 02:26:50,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 02:26:50,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:50,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 02:26:50,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 02:26:50,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 02:26:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -49626712, now seen corresponding path program 1 times [2023-04-03 02:26:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 02:26:50,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876556756] [2023-04-03 02:26:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 02:26:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 02:26:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 02:26:51,018 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 02:26:51,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 02:26:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876556756] [2023-04-03 02:26:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876556756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 02:26:51,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 02:26:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 02:26:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666355789] [2023-04-03 02:26:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 02:26:51,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 02:26:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 02:26:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 02:26:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 02:26:51,020 INFO L87 Difference]: Start difference. First operand 97106 states and 129377 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 02:27:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 02:27:13,474 INFO L93 Difference]: Finished difference Result 287446 states and 382757 transitions. [2023-04-03 02:27:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 02:27:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 228 [2023-04-03 02:27:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 02:27:14,009 INFO L225 Difference]: With dead ends: 287446 [2023-04-03 02:27:14,009 INFO L226 Difference]: Without dead ends: 192523 [2023-04-03 02:27:14,118 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 02:27:14,119 INFO L413 NwaCegarLoop]: 1232 mSDtfsCounter, 622 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 02:27:14,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1868 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 02:27:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192523 states.