/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:32:59,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:32:59,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:32:59,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:32:59,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:32:59,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:32:59,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:32:59,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:32:59,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:32:59,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:32:59,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:32:59,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:32:59,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:32:59,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:32:59,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:32:59,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:32:59,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:32:59,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:32:59,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:32:59,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:32:59,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:32:59,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:32:59,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:32:59,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:32:59,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:32:59,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:32:59,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:32:59,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:32:59,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:32:59,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:32:59,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:32:59,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:32:59,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:32:59,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:32:59,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:32:59,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:32:59,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:32:59,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:32:59,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:32:59,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:32:59,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:32:59,156 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 [2023-03-31 23:32:59,179 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:32:59,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:32:59,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:32:59,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:32:59,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:32:59,180 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:32:59,181 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:32:59,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:32:59,181 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:32:59,181 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:32:59,181 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:32:59,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:32:59,182 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:32:59,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:32:59,183 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:32:59,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:32:59,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:32:59,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:32:59,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:32:59,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:32:59,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:32:59,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:32:59,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:32:59,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:32:59,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:32:59,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:32:59,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:32:59,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:32:59,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:32:59,389 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:32:59,389 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:32:59,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-03-31 23:33:00,435 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:33:00,692 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:33:00,693 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2023-03-31 23:33:00,710 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48237328d/53117a9e31fd433281664d824f2d0d4d/FLAG01800fe6d [2023-03-31 23:33:00,722 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48237328d/53117a9e31fd433281664d824f2d0d4d [2023-03-31 23:33:00,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:33:00,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:33:00,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:33:00,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:33:00,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:33:00,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:33:00" (1/1) ... [2023-03-31 23:33:00,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5596a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:00, skipping insertion in model container [2023-03-31 23:33:00,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:33:00" (1/1) ... [2023-03-31 23:33:00,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:33:00,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:33:00,995 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/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2023-03-31 23:33:01,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:33:01,169 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:33:01,189 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/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2023-03-31 23:33:01,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:33:01,278 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:33:01,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01 WrapperNode [2023-03-31 23:33:01,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:33:01,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:33:01,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:33:01,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:33:01,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:33:01,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:33:01,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:33:01,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:33:01,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (1/1) ... [2023-03-31 23:33:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:33:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:33:01,465 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) [2023-03-31 23:33:01,485 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 [2023-03-31 23:33:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:33:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:33:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:33:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:33:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:33:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:33:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:33:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-03-31 23:33:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-03-31 23:33:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-03-31 23:33:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-03-31 23:33:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-03-31 23:33:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-03-31 23:33:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-03-31 23:33:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-03-31 23:33:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-03-31 23:33:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-03-31 23:33:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:33:01,511 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:33:01,511 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:33:01,511 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:33:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:33:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:33:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:33:01,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-03-31 23:33:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-03-31 23:33:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-03-31 23:33:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-03-31 23:33:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:33:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-03-31 23:33:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-03-31 23:33:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-03-31 23:33:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-03-31 23:33:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-03-31 23:33:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-03-31 23:33:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-03-31 23:33:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-03-31 23:33:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:33:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:33:01,781 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:33:01,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:33:02,938 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:33:03,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:33:03,627 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-03-31 23:33:03,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:33:03 BoogieIcfgContainer [2023-03-31 23:33:03,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:33:03,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:33:03,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:33:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:33:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:33:00" (1/3) ... [2023-03-31 23:33:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df5fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:33:03, skipping insertion in model container [2023-03-31 23:33:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:33:01" (2/3) ... [2023-03-31 23:33:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df5fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:33:03, skipping insertion in model container [2023-03-31 23:33:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:33:03" (3/3) ... [2023-03-31 23:33:03,640 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2023-03-31 23:33:03,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:33:03,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:33:03,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:33:03,726 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;@2c877fec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:33:03,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:33:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 610 states, 356 states have (on average 1.4719101123595506) internal successors, (524), 385 states have internal predecessors, (524), 186 states have call successors, (186), 55 states have call predecessors, (186), 55 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-03-31 23:33:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-03-31 23:33:03,752 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:03,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:03,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:03,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:03,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1176915290, now seen corresponding path program 1 times [2023-03-31 23:33:03,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:03,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859408777] [2023-03-31 23:33:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 23:33:04,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:04,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859408777] [2023-03-31 23:33:04,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859408777] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:04,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:33:04,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:33:04,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726777388] [2023-03-31 23:33:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:04,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:33:04,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:33:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:33:04,858 INFO L87 Difference]: Start difference. First operand has 610 states, 356 states have (on average 1.4719101123595506) internal successors, (524), 385 states have internal predecessors, (524), 186 states have call successors, (186), 55 states have call predecessors, (186), 55 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-03-31 23:33:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:06,976 INFO L93 Difference]: Finished difference Result 1465 states and 2246 transitions. [2023-03-31 23:33:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:33:06,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-03-31 23:33:06,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:06,995 INFO L225 Difference]: With dead ends: 1465 [2023-03-31 23:33:06,995 INFO L226 Difference]: Without dead ends: 1014 [2023-03-31 23:33:07,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:33:07,003 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 2268 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:07,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 467 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-03-31 23:33:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-03-31 23:33:07,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 925. [2023-03-31 23:33:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 608 states have (on average 1.5394736842105263) internal successors, (936), 638 states have internal predecessors, (936), 236 states have call successors, (236), 81 states have call predecessors, (236), 80 states have return successors, (238), 215 states have call predecessors, (238), 228 states have call successors, (238) [2023-03-31 23:33:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1410 transitions. [2023-03-31 23:33:07,163 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1410 transitions. Word has length 97 [2023-03-31 23:33:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:07,164 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1410 transitions. [2023-03-31 23:33:07,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-03-31 23:33:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1410 transitions. [2023-03-31 23:33:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-03-31 23:33:07,171 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:07,171 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:07,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:33:07,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:07,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:07,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1421310172, now seen corresponding path program 1 times [2023-03-31 23:33:07,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:07,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494458526] [2023-03-31 23:33:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:07,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:33:07,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494458526] [2023-03-31 23:33:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494458526] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:33:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 23:33:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144880135] [2023-03-31 23:33:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:07,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:33:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:07,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:33:07,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:33:07,925 INFO L87 Difference]: Start difference. First operand 925 states and 1410 transitions. Second operand has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-03-31 23:33:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:12,141 INFO L93 Difference]: Finished difference Result 2813 states and 4304 transitions. [2023-03-31 23:33:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-03-31 23:33:12,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) Word has length 145 [2023-03-31 23:33:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:12,157 INFO L225 Difference]: With dead ends: 2813 [2023-03-31 23:33:12,157 INFO L226 Difference]: Without dead ends: 1941 [2023-03-31 23:33:12,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-03-31 23:33:12,167 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1660 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 9112 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 10000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 9112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:12,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 1274 Invalid, 10000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [888 Valid, 9112 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-03-31 23:33:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2023-03-31 23:33:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1882. [2023-03-31 23:33:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1248 states have (on average 1.517628205128205) internal successors, (1894), 1295 states have internal predecessors, (1894), 464 states have call successors, (464), 157 states have call predecessors, (464), 169 states have return successors, (496), 449 states have call predecessors, (496), 456 states have call successors, (496) [2023-03-31 23:33:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2854 transitions. [2023-03-31 23:33:12,281 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2854 transitions. Word has length 145 [2023-03-31 23:33:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:12,284 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 2854 transitions. [2023-03-31 23:33:12,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.333333333333333) internal successors, (66), 10 states have internal predecessors, (66), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-03-31 23:33:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2854 transitions. [2023-03-31 23:33:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-03-31 23:33:12,290 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:12,290 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:33:12,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:12,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1687542869, now seen corresponding path program 1 times [2023-03-31 23:33:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458547125] [2023-03-31 23:33:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:33:12,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458547125] [2023-03-31 23:33:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458547125] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:33:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:33:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752776244] [2023-03-31 23:33:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:33:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:33:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:33:12,830 INFO L87 Difference]: Start difference. First operand 1882 states and 2854 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-03-31 23:33:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:15,130 INFO L93 Difference]: Finished difference Result 4643 states and 7087 transitions. [2023-03-31 23:33:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 23:33:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 146 [2023-03-31 23:33:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:15,146 INFO L225 Difference]: With dead ends: 4643 [2023-03-31 23:33:15,147 INFO L226 Difference]: Without dead ends: 2816 [2023-03-31 23:33:15,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:33:15,161 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1296 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:15,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 551 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 3522 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 23:33:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2023-03-31 23:33:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2775. [2023-03-31 23:33:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 1848 states have (on average 1.524891774891775) internal successors, (2818), 1922 states have internal predecessors, (2818), 673 states have call successors, (673), 232 states have call predecessors, (673), 253 states have return successors, (737), 650 states have call predecessors, (737), 665 states have call successors, (737) [2023-03-31 23:33:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4228 transitions. [2023-03-31 23:33:15,297 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4228 transitions. Word has length 146 [2023-03-31 23:33:15,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:15,299 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4228 transitions. [2023-03-31 23:33:15,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-03-31 23:33:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4228 transitions. [2023-03-31 23:33:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 23:33:15,303 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:15,303 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:15,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:33:15,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:15,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1821347058, now seen corresponding path program 1 times [2023-03-31 23:33:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:15,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224377359] [2023-03-31 23:33:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:15,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:33:15,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224377359] [2023-03-31 23:33:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224377359] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:33:15,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:33:15,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437920661] [2023-03-31 23:33:15,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:33:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:33:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:33:15,623 INFO L87 Difference]: Start difference. First operand 2775 states and 4228 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-03-31 23:33:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:16,189 INFO L93 Difference]: Finished difference Result 2827 states and 4310 transitions. [2023-03-31 23:33:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:33:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 150 [2023-03-31 23:33:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:16,202 INFO L225 Difference]: With dead ends: 2827 [2023-03-31 23:33:16,203 INFO L226 Difference]: Without dead ends: 2810 [2023-03-31 23:33:16,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:33:16,208 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 714 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:16,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2154 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 23:33:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2023-03-31 23:33:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2781. [2023-03-31 23:33:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 1854 states have (on average 1.52319309600863) internal successors, (2824), 1928 states have internal predecessors, (2824), 673 states have call successors, (673), 232 states have call predecessors, (673), 253 states have return successors, (737), 650 states have call predecessors, (737), 665 states have call successors, (737) [2023-03-31 23:33:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4234 transitions. [2023-03-31 23:33:16,386 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4234 transitions. Word has length 150 [2023-03-31 23:33:16,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:16,386 INFO L495 AbstractCegarLoop]: Abstraction has 2781 states and 4234 transitions. [2023-03-31 23:33:16,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-03-31 23:33:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4234 transitions. [2023-03-31 23:33:16,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-03-31 23:33:16,390 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:16,390 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:33:16,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:16,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 185191431, now seen corresponding path program 1 times [2023-03-31 23:33:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368103162] [2023-03-31 23:33:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:33:16,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:16,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368103162] [2023-03-31 23:33:16,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368103162] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:16,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:33:16,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 23:33:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297893023] [2023-03-31 23:33:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:16,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 23:33:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 23:33:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:33:16,769 INFO L87 Difference]: Start difference. First operand 2781 states and 4234 transitions. Second operand has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-03-31 23:33:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:17,414 INFO L93 Difference]: Finished difference Result 2952 states and 4466 transitions. [2023-03-31 23:33:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 23:33:17,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 155 [2023-03-31 23:33:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:17,425 INFO L225 Difference]: With dead ends: 2952 [2023-03-31 23:33:17,425 INFO L226 Difference]: Without dead ends: 2935 [2023-03-31 23:33:17,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-03-31 23:33:17,428 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 706 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:17,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 4523 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-03-31 23:33:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2023-03-31 23:33:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2873. [2023-03-31 23:33:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 1913 states have (on average 1.5154208050182958) internal successors, (2899), 1987 states have internal predecessors, (2899), 693 states have call successors, (693), 245 states have call predecessors, (693), 266 states have return successors, (766), 670 states have call predecessors, (766), 685 states have call successors, (766) [2023-03-31 23:33:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4358 transitions. [2023-03-31 23:33:17,576 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4358 transitions. Word has length 155 [2023-03-31 23:33:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4358 transitions. [2023-03-31 23:33:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-03-31 23:33:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4358 transitions. [2023-03-31 23:33:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-03-31 23:33:17,581 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:17,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:17,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:33:17,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:17,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1954387845, now seen corresponding path program 1 times [2023-03-31 23:33:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:17,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387720928] [2023-03-31 23:33:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 23:33:21,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:21,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387720928] [2023-03-31 23:33:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387720928] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:33:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952551731] [2023-03-31 23:33:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:21,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:33:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:33:21,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:33:21,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:33:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:22,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-03-31 23:33:22,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:33:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-03-31 23:33:22,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:33:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952551731] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:33:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:33:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2023-03-31 23:33:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255493248] [2023-03-31 23:33:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:33:22,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:33:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:33:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:33:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2023-03-31 23:33:22,481 INFO L87 Difference]: Start difference. First operand 2873 states and 4358 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-03-31 23:33:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:33:22,712 INFO L93 Difference]: Finished difference Result 2964 states and 4470 transitions. [2023-03-31 23:33:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:33:22,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) Word has length 170 [2023-03-31 23:33:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:33:22,726 INFO L225 Difference]: With dead ends: 2964 [2023-03-31 23:33:22,726 INFO L226 Difference]: Without dead ends: 2947 [2023-03-31 23:33:22,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2023-03-31 23:33:22,729 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 9 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:33:22,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4030 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:33:22,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2023-03-31 23:33:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2927. [2023-03-31 23:33:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 1949 states have (on average 1.5059004617752694) internal successors, (2935), 2023 states have internal predecessors, (2935), 693 states have call successors, (693), 245 states have call predecessors, (693), 284 states have return successors, (784), 688 states have call predecessors, (784), 685 states have call successors, (784) [2023-03-31 23:33:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4412 transitions. [2023-03-31 23:33:22,905 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4412 transitions. Word has length 170 [2023-03-31 23:33:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:33:22,907 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 4412 transitions. [2023-03-31 23:33:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-03-31 23:33:22,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4412 transitions. [2023-03-31 23:33:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-03-31 23:33:22,912 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:33:22,912 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:33:22,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:33:23,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-31 23:33:23,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:33:23,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:33:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1510275438, now seen corresponding path program 1 times [2023-03-31 23:33:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:33:23,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098221206] [2023-03-31 23:33:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:33:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-03-31 23:33:24,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:33:24,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098221206] [2023-03-31 23:33:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098221206] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:33:24,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081392190] [2023-03-31 23:33:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:33:24,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:33:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:33:24,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:33:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:33:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:33:25,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-03-31 23:33:25,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:33:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-03-31 23:33:26,041 INFO L327 TraceCheckSpWp]: Computing backward predicates...