/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:54:36,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:54:36,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:54:37,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:54:37,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:54:37,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:54:37,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:54:37,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:54:37,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:54:37,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:54:37,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:54:37,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:54:37,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:54:37,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:54:37,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:54:37,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:54:37,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:54:37,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:54:37,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:54:37,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:54:37,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:54:37,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:54:37,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:54:37,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:54:37,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:54:37,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:54:37,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:54:37,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:54:37,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:54:37,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:54:37,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:54:37,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:54:37,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:54:37,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:54:37,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:54:37,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:54:37,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:54:37,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:54:37,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:54:37,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:54:37,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:54:37,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:54:37,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:54:37,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:54:37,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:54:37,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:54:37,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:54:37,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:54:37,115 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:54:37,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:54:37,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:54:37,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:54:37,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:37,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:54:37,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:54:37,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:54:37,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:54:37,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:54:37,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:54:37,120 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:54:37,120 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:54:37,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:54:37,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:54:37,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:54:37,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:54:37,337 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:54:37,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2022-01-10 17:54:37,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6197d4af1/c545d0a8d234460a92c1c5ad9c9b01de/FLAG87026367c [2022-01-10 17:54:37,775 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:54:37,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c [2022-01-10 17:54:37,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6197d4af1/c545d0a8d234460a92c1c5ad9c9b01de/FLAG87026367c [2022-01-10 17:54:38,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6197d4af1/c545d0a8d234460a92c1c5ad9c9b01de [2022-01-10 17:54:38,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:54:38,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:54:38,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:38,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:54:38,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:54:38,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:38,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728a31ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38, skipping insertion in model container [2022-01-10 17:54:38,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:38,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:54:38,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:38,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-01-10 17:54:38,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:38,688 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:54:38,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:38,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-01-10 17:54:38,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:38,770 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:54:38,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-01-10 17:54:38,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:38,868 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:54:38,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38 WrapperNode [2022-01-10 17:54:38,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:38,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:38,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:54:38,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:54:38,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:38,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,057 INFO L137 Inliner]: procedures = 93, calls = 335, calls flagged for inlining = 188, calls inlined = 294, statements flattened = 8982 [2022-01-10 17:54:39,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:39,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:54:39,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:54:39,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:54:39,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:54:39,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:54:39,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:54:39,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:54:39,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (1/1) ... [2022-01-10 17:54:39,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:39,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:54:39,305 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) [2022-01-10 17:54:39,323 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 [2022-01-10 17:54:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:54:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:54:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:54:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:54:39,527 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:54:39,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:54:42,580 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:54:42,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:54:42,605 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:54:42,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:42 BoogieIcfgContainer [2022-01-10 17:54:42,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:54:42,611 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:54:42,611 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:54:42,612 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:54:42,614 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:42" (1/1) ... [2022-01-10 17:54:43,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:43 BasicIcfg [2022-01-10 17:54:43,194 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:54:43,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:54:43,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:54:43,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:54:43,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:54:38" (1/4) ... [2022-01-10 17:54:43,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:43, skipping insertion in model container [2022-01-10 17:54:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:38" (2/4) ... [2022-01-10 17:54:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:43, skipping insertion in model container [2022-01-10 17:54:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:42" (3/4) ... [2022-01-10 17:54:43,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735b5f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:54:43, skipping insertion in model container [2022-01-10 17:54:43,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:43" (4/4) ... [2022-01-10 17:54:43,200 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.cTransformedIcfg [2022-01-10 17:54:43,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:54:43,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:54:43,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:54:43,254 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:54:43,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:54:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 2575 states, 2569 states have (on average 1.8668742701440248) internal successors, (4796), 2574 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:54:43,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:43,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:43,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 558995817, now seen corresponding path program 1 times [2022-01-10 17:54:43,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:43,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433979559] [2022-01-10 17:54:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:43,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:43,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:43,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433979559] [2022-01-10 17:54:43,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433979559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:43,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:43,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:43,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455785941] [2022-01-10 17:54:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:43,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:43,555 INFO L87 Difference]: Start difference. First operand has 2575 states, 2569 states have (on average 1.8668742701440248) internal successors, (4796), 2574 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:43,847 INFO L93 Difference]: Finished difference Result 7630 states and 14228 transitions. [2022-01-10 17:54:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:54:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:43,882 INFO L225 Difference]: With dead ends: 7630 [2022-01-10 17:54:43,882 INFO L226 Difference]: Without dead ends: 5057 [2022-01-10 17:54:43,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:43,896 INFO L933 BasicCegarLoop]: 9427 mSDtfsCounter, 4757 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4757 SdHoareTripleChecker+Valid, 14090 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:43,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4757 Valid, 14090 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2022-01-10 17:54:44,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 2564. [2022-01-10 17:54:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2559 states have (on average 1.8647909339585775) internal successors, (4772), 2563 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4772 transitions. [2022-01-10 17:54:44,098 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4772 transitions. Word has length 58 [2022-01-10 17:54:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:44,098 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 4772 transitions. [2022-01-10 17:54:44,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4772 transitions. [2022-01-10 17:54:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:54:44,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:44,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:44,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:54:44,102 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1116130988, now seen corresponding path program 1 times [2022-01-10 17:54:44,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:44,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784641764] [2022-01-10 17:54:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:44,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:44,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784641764] [2022-01-10 17:54:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784641764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:44,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438620863] [2022-01-10 17:54:44,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:44,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:44,255 INFO L87 Difference]: Start difference. First operand 2564 states and 4772 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:44,455 INFO L93 Difference]: Finished difference Result 7535 states and 14036 transitions. [2022-01-10 17:54:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:54:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:44,472 INFO L225 Difference]: With dead ends: 7535 [2022-01-10 17:54:44,473 INFO L226 Difference]: Without dead ends: 5021 [2022-01-10 17:54:44,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:44,480 INFO L933 BasicCegarLoop]: 9290 mSDtfsCounter, 4659 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 13893 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:44,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 13893 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2022-01-10 17:54:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 2564. [2022-01-10 17:54:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2559 states have (on average 1.8550214927706135) internal successors, (4747), 2563 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4747 transitions. [2022-01-10 17:54:44,552 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4747 transitions. Word has length 65 [2022-01-10 17:54:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:44,553 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 4747 transitions. [2022-01-10 17:54:44,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4747 transitions. [2022-01-10 17:54:44,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:54:44,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:44,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:44,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:54:44,562 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2043990601, now seen corresponding path program 1 times [2022-01-10 17:54:44,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:44,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897503185] [2022-01-10 17:54:44,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:44,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:44,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897503185] [2022-01-10 17:54:44,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897503185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:44,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236771302] [2022-01-10 17:54:44,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:44,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:44,648 INFO L87 Difference]: Start difference. First operand 2564 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:44,755 INFO L93 Difference]: Finished difference Result 5057 states and 9396 transitions. [2022-01-10 17:54:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 17:54:44,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:44,763 INFO L225 Difference]: With dead ends: 5057 [2022-01-10 17:54:44,763 INFO L226 Difference]: Without dead ends: 2564 [2022-01-10 17:54:44,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:44,771 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 4736 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4736 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:44,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4736 Valid, 4735 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-01-10 17:54:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2022-01-10 17:54:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2559 states have (on average 1.8542399374755765) internal successors, (4745), 2563 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4745 transitions. [2022-01-10 17:54:44,817 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4745 transitions. Word has length 68 [2022-01-10 17:54:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:44,818 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 4745 transitions. [2022-01-10 17:54:44,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4745 transitions. [2022-01-10 17:54:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:54:44,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:44,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:44,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:54:44,821 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash -293546723, now seen corresponding path program 1 times [2022-01-10 17:54:44,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:44,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240856031] [2022-01-10 17:54:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:44,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:44,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240856031] [2022-01-10 17:54:44,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240856031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:44,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730239063] [2022-01-10 17:54:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:44,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:44,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:44,915 INFO L87 Difference]: Start difference. First operand 2564 states and 4745 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:45,039 INFO L93 Difference]: Finished difference Result 5021 states and 9323 transitions. [2022-01-10 17:54:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:45,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:54:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:45,050 INFO L225 Difference]: With dead ends: 5021 [2022-01-10 17:54:45,050 INFO L226 Difference]: Without dead ends: 2564 [2022-01-10 17:54:45,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:45,058 INFO L933 BasicCegarLoop]: 4650 mSDtfsCounter, 4717 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 4665 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:45,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 4665 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-01-10 17:54:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2022-01-10 17:54:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2559 states have (on average 1.8503321610003909) internal successors, (4735), 2563 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4735 transitions. [2022-01-10 17:54:45,119 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4735 transitions. Word has length 70 [2022-01-10 17:54:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:45,119 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 4735 transitions. [2022-01-10 17:54:45,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4735 transitions. [2022-01-10 17:54:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:54:45,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:45,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:45,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:54:45,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -730762669, now seen corresponding path program 1 times [2022-01-10 17:54:45,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:45,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347948816] [2022-01-10 17:54:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:45,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:45,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:45,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347948816] [2022-01-10 17:54:45,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347948816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:45,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:45,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:45,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389127092] [2022-01-10 17:54:45,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:45,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:45,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:45,206 INFO L87 Difference]: Start difference. First operand 2564 states and 4735 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:45,394 INFO L93 Difference]: Finished difference Result 6328 states and 11741 transitions. [2022-01-10 17:54:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 17:54:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:45,410 INFO L225 Difference]: With dead ends: 6328 [2022-01-10 17:54:45,411 INFO L226 Difference]: Without dead ends: 5054 [2022-01-10 17:54:45,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:45,413 INFO L933 BasicCegarLoop]: 7061 mSDtfsCounter, 4713 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4713 SdHoareTripleChecker+Valid, 11704 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:45,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4713 Valid, 11704 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-01-10 17:54:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 5054. [2022-01-10 17:54:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5054 states, 5049 states have (on average 1.8571994454347396) internal successors, (9377), 5053 states have internal predecessors, (9377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5054 states to 5054 states and 9377 transitions. [2022-01-10 17:54:45,544 INFO L78 Accepts]: Start accepts. Automaton has 5054 states and 9377 transitions. Word has length 72 [2022-01-10 17:54:45,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:45,547 INFO L470 AbstractCegarLoop]: Abstraction has 5054 states and 9377 transitions. [2022-01-10 17:54:45,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5054 states and 9377 transitions. [2022-01-10 17:54:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:45,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:45,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:45,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:54:45,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:45,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1178791547, now seen corresponding path program 1 times [2022-01-10 17:54:45,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:45,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500390360] [2022-01-10 17:54:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:45,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:45,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500390360] [2022-01-10 17:54:45,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500390360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:45,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960640186] [2022-01-10 17:54:45,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:45,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:45,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:45,629 INFO L87 Difference]: Start difference. First operand 5054 states and 9377 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:45,826 INFO L93 Difference]: Finished difference Result 12500 states and 23256 transitions. [2022-01-10 17:54:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:54:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:45,868 INFO L225 Difference]: With dead ends: 12500 [2022-01-10 17:54:45,868 INFO L226 Difference]: Without dead ends: 9976 [2022-01-10 17:54:45,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:45,878 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 4657 mSDsluCounter, 4646 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 9378 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:45,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4657 Valid, 9378 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9976 states. [2022-01-10 17:54:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9976 to 9974. [2022-01-10 17:54:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 9969 states have (on average 1.861671180660046) internal successors, (18559), 9973 states have internal predecessors, (18559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 18559 transitions. [2022-01-10 17:54:46,141 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 18559 transitions. Word has length 73 [2022-01-10 17:54:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:46,141 INFO L470 AbstractCegarLoop]: Abstraction has 9974 states and 18559 transitions. [2022-01-10 17:54:46,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 18559 transitions. [2022-01-10 17:54:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:46,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:46,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:46,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:54:46,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1747718247, now seen corresponding path program 1 times [2022-01-10 17:54:46,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:46,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087603525] [2022-01-10 17:54:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:46,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:46,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087603525] [2022-01-10 17:54:46,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087603525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:46,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:46,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:46,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413566384] [2022-01-10 17:54:46,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:46,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:46,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:46,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:46,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:46,253 INFO L87 Difference]: Start difference. First operand 9974 states and 18559 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:47,104 INFO L93 Difference]: Finished difference Result 49403 states and 92075 transitions. [2022-01-10 17:54:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:54:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:54:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:47,209 INFO L225 Difference]: With dead ends: 49403 [2022-01-10 17:54:47,209 INFO L226 Difference]: Without dead ends: 39452 [2022-01-10 17:54:47,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:47,235 INFO L933 BasicCegarLoop]: 13965 mSDtfsCounter, 13946 mSDsluCounter, 18661 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13946 SdHoareTripleChecker+Valid, 32626 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:47,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13946 Valid, 32626 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:47,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39452 states. [2022-01-10 17:54:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39452 to 9986. [2022-01-10 17:54:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9981 states have (on average 1.860635206893097) internal successors, (18571), 9985 states have internal predecessors, (18571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 18571 transitions. [2022-01-10 17:54:47,853 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 18571 transitions. Word has length 73 [2022-01-10 17:54:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:47,853 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 18571 transitions. [2022-01-10 17:54:47,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 18571 transitions. [2022-01-10 17:54:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:47,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:47,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:47,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:54:47,863 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1646806280, now seen corresponding path program 1 times [2022-01-10 17:54:47,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:47,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002570508] [2022-01-10 17:54:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:47,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:47,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002570508] [2022-01-10 17:54:47,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002570508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:47,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:47,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:47,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130516011] [2022-01-10 17:54:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:47,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:47,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:47,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:47,959 INFO L87 Difference]: Start difference. First operand 9986 states and 18571 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:49,092 INFO L93 Difference]: Finished difference Result 49373 states and 92033 transitions. [2022-01-10 17:54:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:49,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:54:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:49,176 INFO L225 Difference]: With dead ends: 49373 [2022-01-10 17:54:49,176 INFO L226 Difference]: Without dead ends: 39404 [2022-01-10 17:54:49,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:49,200 INFO L933 BasicCegarLoop]: 18503 mSDtfsCounter, 23279 mSDsluCounter, 18522 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23279 SdHoareTripleChecker+Valid, 37025 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:49,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23279 Valid, 37025 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39404 states. [2022-01-10 17:54:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39404 to 9956. [2022-01-10 17:54:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9956 states, 9951 states have (on average 1.861923424781429) internal successors, (18528), 9955 states have internal predecessors, (18528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 18528 transitions. [2022-01-10 17:54:49,873 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 18528 transitions. Word has length 73 [2022-01-10 17:54:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:49,874 INFO L470 AbstractCegarLoop]: Abstraction has 9956 states and 18528 transitions. [2022-01-10 17:54:49,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 18528 transitions. [2022-01-10 17:54:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 17:54:49,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:49,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:49,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:54:49,881 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2008021847, now seen corresponding path program 1 times [2022-01-10 17:54:49,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:49,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307724088] [2022-01-10 17:54:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:49,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:49,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:49,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307724088] [2022-01-10 17:54:49,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307724088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:49,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:49,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:49,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719512397] [2022-01-10 17:54:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:49,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:49,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:49,953 INFO L87 Difference]: Start difference. First operand 9956 states and 18528 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:50,963 INFO L93 Difference]: Finished difference Result 39353 states and 73375 transitions. [2022-01-10 17:54:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 17:54:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:51,048 INFO L225 Difference]: With dead ends: 39353 [2022-01-10 17:54:51,048 INFO L226 Difference]: Without dead ends: 29444 [2022-01-10 17:54:51,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:51,066 INFO L933 BasicCegarLoop]: 13788 mSDtfsCounter, 14003 mSDsluCounter, 13738 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14003 SdHoareTripleChecker+Valid, 27526 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:51,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14003 Valid, 27526 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29444 states. [2022-01-10 17:54:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29444 to 9982. [2022-01-10 17:54:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 9977 states have (on average 1.8608800240553272) internal successors, (18566), 9981 states have internal predecessors, (18566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 18566 transitions. [2022-01-10 17:54:51,465 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 18566 transitions. Word has length 76 [2022-01-10 17:54:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:51,465 INFO L470 AbstractCegarLoop]: Abstraction has 9982 states and 18566 transitions. [2022-01-10 17:54:51,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 18566 transitions. [2022-01-10 17:54:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 17:54:51,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:51,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:51,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:54:51,472 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1292548691, now seen corresponding path program 1 times [2022-01-10 17:54:51,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:51,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249110971] [2022-01-10 17:54:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:51,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:51,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249110971] [2022-01-10 17:54:51,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249110971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:51,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:51,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:51,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581742377] [2022-01-10 17:54:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:51,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:51,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:51,548 INFO L87 Difference]: Start difference. First operand 9982 states and 18566 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:52,182 INFO L93 Difference]: Finished difference Result 22234 states and 41417 transitions. [2022-01-10 17:54:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 17:54:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:52,211 INFO L225 Difference]: With dead ends: 22234 [2022-01-10 17:54:52,211 INFO L226 Difference]: Without dead ends: 14767 [2022-01-10 17:54:52,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:52,224 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 9217 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9217 SdHoareTripleChecker+Valid, 9326 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:52,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9217 Valid, 9326 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14767 states. [2022-01-10 17:54:52,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14767 to 9904. [2022-01-10 17:54:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9899 states have (on average 1.8621072835639965) internal successors, (18433), 9903 states have internal predecessors, (18433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 18433 transitions. [2022-01-10 17:54:52,696 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 18433 transitions. Word has length 77 [2022-01-10 17:54:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:52,697 INFO L470 AbstractCegarLoop]: Abstraction has 9904 states and 18433 transitions. [2022-01-10 17:54:52,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 18433 transitions. [2022-01-10 17:54:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 17:54:52,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:52,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:52,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:54:52,704 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:52,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash 848914594, now seen corresponding path program 1 times [2022-01-10 17:54:52,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:52,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962538078] [2022-01-10 17:54:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:52,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:52,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:52,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962538078] [2022-01-10 17:54:52,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962538078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:52,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:52,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:52,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524795086] [2022-01-10 17:54:52,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:52,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:52,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:52,767 INFO L87 Difference]: Start difference. First operand 9904 states and 18433 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:53,392 INFO L93 Difference]: Finished difference Result 29517 states and 55010 transitions. [2022-01-10 17:54:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:53,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 17:54:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:53,426 INFO L225 Difference]: With dead ends: 29517 [2022-01-10 17:54:53,426 INFO L226 Difference]: Without dead ends: 19726 [2022-01-10 17:54:53,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:53,439 INFO L933 BasicCegarLoop]: 9231 mSDtfsCounter, 13805 mSDsluCounter, 13900 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13805 SdHoareTripleChecker+Valid, 23131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:53,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13805 Valid, 23131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19726 states. [2022-01-10 17:54:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19726 to 9910. [2022-01-10 17:54:53,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9905 states have (on average 1.8615850580514892) internal successors, (18439), 9909 states have internal predecessors, (18439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 18439 transitions. [2022-01-10 17:54:53,780 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 18439 transitions. Word has length 78 [2022-01-10 17:54:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:53,780 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 18439 transitions. [2022-01-10 17:54:53,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 18439 transitions. [2022-01-10 17:54:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 17:54:53,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:53,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:54:53,786 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1147955289, now seen corresponding path program 1 times [2022-01-10 17:54:53,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:53,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126462153] [2022-01-10 17:54:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:53,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:53,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:53,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126462153] [2022-01-10 17:54:53,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126462153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:53,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:53,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:53,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261503684] [2022-01-10 17:54:53,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:53,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:53,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:53,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:53,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:53,861 INFO L87 Difference]: Start difference. First operand 9910 states and 18439 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:54,114 INFO L93 Difference]: Finished difference Result 14839 states and 27625 transitions. [2022-01-10 17:54:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:54,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 17:54:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:54,122 INFO L225 Difference]: With dead ends: 14839 [2022-01-10 17:54:54,122 INFO L226 Difference]: Without dead ends: 4988 [2022-01-10 17:54:54,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:54,144 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 4608 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:54,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4608 Valid, 4769 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2022-01-10 17:54:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4988. [2022-01-10 17:54:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4984 states have (on average 1.8575441412520064) internal successors, (9258), 4987 states have internal predecessors, (9258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 9258 transitions. [2022-01-10 17:54:54,307 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 9258 transitions. Word has length 80 [2022-01-10 17:54:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:54,308 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 9258 transitions. [2022-01-10 17:54:54,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 9258 transitions. [2022-01-10 17:54:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 17:54:54,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:54,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:54,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:54:54,312 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:54,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash -600647606, now seen corresponding path program 1 times [2022-01-10 17:54:54,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:54,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459667843] [2022-01-10 17:54:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:54,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:54,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:54,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459667843] [2022-01-10 17:54:54,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459667843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:54,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:54,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:54,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271484388] [2022-01-10 17:54:54,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:54,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:54,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:54,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:54,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:54,408 INFO L87 Difference]: Start difference. First operand 4988 states and 9258 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:54,699 INFO L93 Difference]: Finished difference Result 9875 states and 18372 transitions. [2022-01-10 17:54:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:54,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 17:54:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:54,707 INFO L225 Difference]: With dead ends: 9875 [2022-01-10 17:54:54,708 INFO L226 Difference]: Without dead ends: 4960 [2022-01-10 17:54:54,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:54,714 INFO L933 BasicCegarLoop]: 4624 mSDtfsCounter, 9191 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9191 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:54,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9191 Valid, 4742 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2022-01-10 17:54:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4960. [2022-01-10 17:54:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4956 states have (on average 1.857949959644875) internal successors, (9208), 4959 states have internal predecessors, (9208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 9208 transitions. [2022-01-10 17:54:54,884 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 9208 transitions. Word has length 82 [2022-01-10 17:54:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:54,884 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 9208 transitions. [2022-01-10 17:54:54,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:54,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 9208 transitions. [2022-01-10 17:54:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 17:54:54,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:54,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:54,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:54:54,890 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -187988943, now seen corresponding path program 1 times [2022-01-10 17:54:54,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782683004] [2022-01-10 17:54:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:54,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:54,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782683004] [2022-01-10 17:54:54,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782683004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:54,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:54,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:54,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366480260] [2022-01-10 17:54:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:54,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:54,970 INFO L87 Difference]: Start difference. First operand 4960 states and 9208 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:55,234 INFO L93 Difference]: Finished difference Result 9857 states and 18324 transitions. [2022-01-10 17:54:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 17:54:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:55,242 INFO L225 Difference]: With dead ends: 9857 [2022-01-10 17:54:55,242 INFO L226 Difference]: Without dead ends: 4994 [2022-01-10 17:54:55,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:55,247 INFO L933 BasicCegarLoop]: 4631 mSDtfsCounter, 13764 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13764 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:55,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13764 Valid, 4746 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2022-01-10 17:54:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4960. [2022-01-10 17:54:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4956 states have (on average 1.857546408393866) internal successors, (9206), 4959 states have internal predecessors, (9206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 9206 transitions. [2022-01-10 17:54:55,470 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 9206 transitions. Word has length 83 [2022-01-10 17:54:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:55,471 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 9206 transitions. [2022-01-10 17:54:55,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 9206 transitions. [2022-01-10 17:54:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 17:54:55,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:55,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:55,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:54:55,474 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2115816858, now seen corresponding path program 1 times [2022-01-10 17:54:55,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:55,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334559514] [2022-01-10 17:54:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:55,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:55,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:55,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334559514] [2022-01-10 17:54:55,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334559514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:55,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:55,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:55,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254073184] [2022-01-10 17:54:55,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:55,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:55,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:55,541 INFO L87 Difference]: Start difference. First operand 4960 states and 9206 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:55,770 INFO L93 Difference]: Finished difference Result 8698 states and 16146 transitions. [2022-01-10 17:54:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 17:54:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:55,778 INFO L225 Difference]: With dead ends: 8698 [2022-01-10 17:54:55,778 INFO L226 Difference]: Without dead ends: 4974 [2022-01-10 17:54:55,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:55,782 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 4672 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 9188 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:55,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4672 Valid, 9188 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2022-01-10 17:54:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 4957. [2022-01-10 17:54:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4957 states, 4953 states have (on average 1.8568544316575812) internal successors, (9197), 4956 states have internal predecessors, (9197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4957 states to 4957 states and 9197 transitions. [2022-01-10 17:54:55,947 INFO L78 Accepts]: Start accepts. Automaton has 4957 states and 9197 transitions. Word has length 84 [2022-01-10 17:54:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:55,948 INFO L470 AbstractCegarLoop]: Abstraction has 4957 states and 9197 transitions. [2022-01-10 17:54:55,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4957 states and 9197 transitions. [2022-01-10 17:54:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 17:54:55,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:55,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:55,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:54:55,951 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1718123381, now seen corresponding path program 1 times [2022-01-10 17:54:55,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:55,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731094162] [2022-01-10 17:54:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:55,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:56,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:56,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731094162] [2022-01-10 17:54:56,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731094162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:56,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:56,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:56,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147045105] [2022-01-10 17:54:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:56,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:56,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:56,003 INFO L87 Difference]: Start difference. First operand 4957 states and 9197 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:57,371 INFO L93 Difference]: Finished difference Result 19789 states and 36733 transitions. [2022-01-10 17:54:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 17:54:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:57,399 INFO L225 Difference]: With dead ends: 19789 [2022-01-10 17:54:57,399 INFO L226 Difference]: Without dead ends: 14960 [2022-01-10 17:54:57,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:57,408 INFO L933 BasicCegarLoop]: 8933 mSDtfsCounter, 17886 mSDsluCounter, 13458 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17886 SdHoareTripleChecker+Valid, 22391 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:57,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17886 Valid, 22391 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 17:54:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2022-01-10 17:54:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 4965. [2022-01-10 17:54:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4965 states, 4961 states have (on average 1.8554726869582745) internal successors, (9205), 4964 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4965 states to 4965 states and 9205 transitions. [2022-01-10 17:54:57,645 INFO L78 Accepts]: Start accepts. Automaton has 4965 states and 9205 transitions. Word has length 85 [2022-01-10 17:54:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:57,645 INFO L470 AbstractCegarLoop]: Abstraction has 4965 states and 9205 transitions. [2022-01-10 17:54:57,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4965 states and 9205 transitions. [2022-01-10 17:54:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 17:54:57,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:57,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:57,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:54:57,648 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1044802828, now seen corresponding path program 1 times [2022-01-10 17:54:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:57,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915105030] [2022-01-10 17:54:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:57,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:57,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:57,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915105030] [2022-01-10 17:54:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915105030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:57,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:57,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:57,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144827955] [2022-01-10 17:54:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:57,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:57,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:57,716 INFO L87 Difference]: Start difference. First operand 4965 states and 9205 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:58,874 INFO L93 Difference]: Finished difference Result 14357 states and 26571 transitions. [2022-01-10 17:54:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 17:54:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:58,890 INFO L225 Difference]: With dead ends: 14357 [2022-01-10 17:54:58,890 INFO L226 Difference]: Without dead ends: 9494 [2022-01-10 17:54:58,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:58,898 INFO L933 BasicCegarLoop]: 8088 mSDtfsCounter, 8062 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8062 SdHoareTripleChecker+Valid, 14407 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:58,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8062 Valid, 14407 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 17:54:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2022-01-10 17:54:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 6823. [2022-01-10 17:54:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6823 states, 6819 states have (on average 1.8364862883120692) internal successors, (12523), 6822 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6823 states to 6823 states and 12523 transitions. [2022-01-10 17:54:59,255 INFO L78 Accepts]: Start accepts. Automaton has 6823 states and 12523 transitions. Word has length 86 [2022-01-10 17:54:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:59,255 INFO L470 AbstractCegarLoop]: Abstraction has 6823 states and 12523 transitions. [2022-01-10 17:54:59,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6823 states and 12523 transitions. [2022-01-10 17:54:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:54:59,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:59,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:59,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:54:59,258 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash -671649172, now seen corresponding path program 1 times [2022-01-10 17:54:59,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:59,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290601471] [2022-01-10 17:54:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:59,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:59,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:59,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290601471] [2022-01-10 17:54:59,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290601471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:59,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:59,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:59,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502292938] [2022-01-10 17:54:59,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:59,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:59,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:59,318 INFO L87 Difference]: Start difference. First operand 6823 states and 12523 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:01,311 INFO L93 Difference]: Finished difference Result 48857 states and 90215 transitions. [2022-01-10 17:55:01,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:01,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 17:55:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:01,376 INFO L225 Difference]: With dead ends: 48857 [2022-01-10 17:55:01,376 INFO L226 Difference]: Without dead ends: 42154 [2022-01-10 17:55:01,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:01,389 INFO L933 BasicCegarLoop]: 6932 mSDtfsCounter, 29631 mSDsluCounter, 20239 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29631 SdHoareTripleChecker+Valid, 27171 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:01,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29631 Valid, 27171 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42154 states. [2022-01-10 17:55:02,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42154 to 12497. [2022-01-10 17:55:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12493 states have (on average 1.8433522772752742) internal successors, (23029), 12496 states have internal predecessors, (23029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 23029 transitions. [2022-01-10 17:55:02,110 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 23029 transitions. Word has length 88 [2022-01-10 17:55:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:02,111 INFO L470 AbstractCegarLoop]: Abstraction has 12497 states and 23029 transitions. [2022-01-10 17:55:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 23029 transitions. [2022-01-10 17:55:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 17:55:02,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:02,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:02,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 17:55:02,113 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash -660333045, now seen corresponding path program 1 times [2022-01-10 17:55:02,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:02,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160653836] [2022-01-10 17:55:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:02,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:02,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:02,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160653836] [2022-01-10 17:55:02,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160653836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:02,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:02,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:02,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063070971] [2022-01-10 17:55:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:02,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:02,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:02,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:02,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:02,167 INFO L87 Difference]: Start difference. First operand 12497 states and 23029 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:03,096 INFO L93 Difference]: Finished difference Result 22135 states and 40621 transitions. [2022-01-10 17:55:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:03,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 17:55:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:03,124 INFO L225 Difference]: With dead ends: 22135 [2022-01-10 17:55:03,124 INFO L226 Difference]: Without dead ends: 16982 [2022-01-10 17:55:03,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:03,136 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 2762 mSDsluCounter, 8385 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 12696 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:03,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2762 Valid, 12696 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16982 states. [2022-01-10 17:55:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16982 to 12517. [2022-01-10 17:55:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12517 states, 12513 states have (on average 1.8420043155118677) internal successors, (23049), 12516 states have internal predecessors, (23049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 23049 transitions. [2022-01-10 17:55:03,779 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 23049 transitions. Word has length 88 [2022-01-10 17:55:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:03,780 INFO L470 AbstractCegarLoop]: Abstraction has 12517 states and 23049 transitions. [2022-01-10 17:55:03,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 23049 transitions. [2022-01-10 17:55:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 17:55:03,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:03,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:03,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 17:55:03,783 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:03,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1803177503, now seen corresponding path program 1 times [2022-01-10 17:55:03,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:03,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569972639] [2022-01-10 17:55:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:03,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:03,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:03,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569972639] [2022-01-10 17:55:03,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569972639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:03,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:03,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:03,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843189183] [2022-01-10 17:55:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:03,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:03,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:03,837 INFO L87 Difference]: Start difference. First operand 12517 states and 23049 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:05,006 INFO L93 Difference]: Finished difference Result 27266 states and 50197 transitions. [2022-01-10 17:55:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:55:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-01-10 17:55:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:05,043 INFO L225 Difference]: With dead ends: 27266 [2022-01-10 17:55:05,043 INFO L226 Difference]: Without dead ends: 21973 [2022-01-10 17:55:05,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:05,056 INFO L933 BasicCegarLoop]: 6308 mSDtfsCounter, 6560 mSDsluCounter, 6188 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 12496 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:05,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 12496 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21973 states. [2022-01-10 17:55:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21973 to 17575. [2022-01-10 17:55:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17575 states, 17571 states have (on average 1.8405896078766149) internal successors, (32341), 17574 states have internal predecessors, (32341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17575 states to 17575 states and 32341 transitions. [2022-01-10 17:55:06,013 INFO L78 Accepts]: Start accepts. Automaton has 17575 states and 32341 transitions. Word has length 94 [2022-01-10 17:55:06,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:06,013 INFO L470 AbstractCegarLoop]: Abstraction has 17575 states and 32341 transitions. [2022-01-10 17:55:06,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 17575 states and 32341 transitions. [2022-01-10 17:55:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 17:55:06,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:06,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:06,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 17:55:06,016 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash -191390783, now seen corresponding path program 1 times [2022-01-10 17:55:06,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:06,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466592711] [2022-01-10 17:55:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:06,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:06,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:06,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466592711] [2022-01-10 17:55:06,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466592711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:06,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:06,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:06,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841449301] [2022-01-10 17:55:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:06,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:06,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:06,058 INFO L87 Difference]: Start difference. First operand 17575 states and 32341 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:07,282 INFO L93 Difference]: Finished difference Result 32797 states and 60371 transitions. [2022-01-10 17:55:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 17:55:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:07,313 INFO L225 Difference]: With dead ends: 32797 [2022-01-10 17:55:07,313 INFO L226 Difference]: Without dead ends: 22634 [2022-01-10 17:55:07,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:07,335 INFO L933 BasicCegarLoop]: 4302 mSDtfsCounter, 2295 mSDsluCounter, 4229 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 8531 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:07,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2295 Valid, 8531 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22634 states. [2022-01-10 17:55:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22634 to 22595. [2022-01-10 17:55:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22595 states, 22591 states have (on average 1.8411314240184145) internal successors, (41593), 22594 states have internal predecessors, (41593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22595 states to 22595 states and 41593 transitions. [2022-01-10 17:55:08,493 INFO L78 Accepts]: Start accepts. Automaton has 22595 states and 41593 transitions. Word has length 95 [2022-01-10 17:55:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:08,493 INFO L470 AbstractCegarLoop]: Abstraction has 22595 states and 41593 transitions. [2022-01-10 17:55:08,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 22595 states and 41593 transitions. [2022-01-10 17:55:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 17:55:08,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:08,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:08,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 17:55:08,515 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1035862654, now seen corresponding path program 1 times [2022-01-10 17:55:08,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392735962] [2022-01-10 17:55:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:08,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:08,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392735962] [2022-01-10 17:55:08,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392735962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:08,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:08,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:08,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339697775] [2022-01-10 17:55:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:08,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:08,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:08,695 INFO L87 Difference]: Start difference. First operand 22595 states and 41593 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:10,453 INFO L93 Difference]: Finished difference Result 49543 states and 91115 transitions. [2022-01-10 17:55:10,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:10,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-10 17:55:10,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:10,497 INFO L225 Difference]: With dead ends: 49543 [2022-01-10 17:55:10,497 INFO L226 Difference]: Without dead ends: 34164 [2022-01-10 17:55:10,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:10,509 INFO L933 BasicCegarLoop]: 10065 mSDtfsCounter, 6414 mSDsluCounter, 9880 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6414 SdHoareTripleChecker+Valid, 19945 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:10,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6414 Valid, 19945 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34164 states. [2022-01-10 17:55:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34164 to 22361. [2022-01-10 17:55:11,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22357 states have (on average 1.8404526546495505) internal successors, (41147), 22360 states have internal predecessors, (41147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 41147 transitions. [2022-01-10 17:55:11,804 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 41147 transitions. Word has length 95 [2022-01-10 17:55:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:11,805 INFO L470 AbstractCegarLoop]: Abstraction has 22361 states and 41147 transitions. [2022-01-10 17:55:11,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 41147 transitions. [2022-01-10 17:55:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 17:55:11,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:11,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:11,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 17:55:11,808 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1518935571, now seen corresponding path program 1 times [2022-01-10 17:55:11,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:11,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123953020] [2022-01-10 17:55:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:11,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:11,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:11,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123953020] [2022-01-10 17:55:11,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123953020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:11,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:11,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:11,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977874861] [2022-01-10 17:55:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:11,865 INFO L87 Difference]: Start difference. First operand 22361 states and 41147 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:15,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:15,147 INFO L93 Difference]: Finished difference Result 69560 states and 128081 transitions. [2022-01-10 17:55:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-10 17:55:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:15,241 INFO L225 Difference]: With dead ends: 69560 [2022-01-10 17:55:15,241 INFO L226 Difference]: Without dead ends: 54415 [2022-01-10 17:55:15,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:15,261 INFO L933 BasicCegarLoop]: 6385 mSDtfsCounter, 12269 mSDsluCounter, 13952 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12269 SdHoareTripleChecker+Valid, 20337 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:15,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12269 Valid, 20337 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:55:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54415 states. [2022-01-10 17:55:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54415 to 22361. [2022-01-10 17:55:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22357 states have (on average 1.8395580802433242) internal successors, (41127), 22360 states have internal predecessors, (41127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 41127 transitions. [2022-01-10 17:55:16,803 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 41127 transitions. Word has length 96 [2022-01-10 17:55:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:16,803 INFO L470 AbstractCegarLoop]: Abstraction has 22361 states and 41127 transitions. [2022-01-10 17:55:16,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 41127 transitions. [2022-01-10 17:55:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 17:55:16,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:16,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:16,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 17:55:16,806 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:16,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:16,807 INFO L85 PathProgramCache]: Analyzing trace with hash -823563727, now seen corresponding path program 1 times [2022-01-10 17:55:16,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:16,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492861464] [2022-01-10 17:55:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:16,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:16,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492861464] [2022-01-10 17:55:16,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492861464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:16,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:16,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:16,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630531927] [2022-01-10 17:55:16,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:16,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:16,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:16,938 INFO L87 Difference]: Start difference. First operand 22361 states and 41127 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:19,384 INFO L93 Difference]: Finished difference Result 54765 states and 100667 transitions. [2022-01-10 17:55:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:19,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-01-10 17:55:19,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:19,438 INFO L225 Difference]: With dead ends: 54765 [2022-01-10 17:55:19,438 INFO L226 Difference]: Without dead ends: 35548 [2022-01-10 17:55:19,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:19,455 INFO L933 BasicCegarLoop]: 4205 mSDtfsCounter, 2433 mSDsluCounter, 3849 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 8054 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:19,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 8054 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 17:55:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35548 states. [2022-01-10 17:55:20,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35548 to 22361. [2022-01-10 17:55:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22357 states have (on average 1.8266762087936663) internal successors, (40839), 22360 states have internal predecessors, (40839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 40839 transitions. [2022-01-10 17:55:20,951 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 40839 transitions. Word has length 97 [2022-01-10 17:55:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:20,951 INFO L470 AbstractCegarLoop]: Abstraction has 22361 states and 40839 transitions. [2022-01-10 17:55:20,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 40839 transitions. [2022-01-10 17:55:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 17:55:20,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:20,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:20,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 17:55:20,955 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1364629653, now seen corresponding path program 1 times [2022-01-10 17:55:20,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:20,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272632248] [2022-01-10 17:55:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:20,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:20,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:20,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272632248] [2022-01-10 17:55:20,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272632248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:20,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:20,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:55:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162390037] [2022-01-10 17:55:20,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:20,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:20,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:20,995 INFO L87 Difference]: Start difference. First operand 22361 states and 40839 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:22,448 INFO L93 Difference]: Finished difference Result 37785 states and 68835 transitions. [2022-01-10 17:55:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:22,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-01-10 17:55:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:22,481 INFO L225 Difference]: With dead ends: 37785 [2022-01-10 17:55:22,481 INFO L226 Difference]: Without dead ends: 22380 [2022-01-10 17:55:22,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:22,490 INFO L933 BasicCegarLoop]: 4187 mSDtfsCounter, 2460 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 7748 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:22,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2460 Valid, 7748 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22380 states. [2022-01-10 17:55:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22380 to 22361. [2022-01-10 17:55:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22357 states have (on average 1.8132575927002728) internal successors, (40539), 22360 states have internal predecessors, (40539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 40539 transitions. [2022-01-10 17:55:24,028 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 40539 transitions. Word has length 97 [2022-01-10 17:55:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:24,028 INFO L470 AbstractCegarLoop]: Abstraction has 22361 states and 40539 transitions. [2022-01-10 17:55:24,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 40539 transitions. [2022-01-10 17:55:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 17:55:24,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:24,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:24,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 17:55:24,032 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1999473543, now seen corresponding path program 1 times [2022-01-10 17:55:24,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:24,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200562465] [2022-01-10 17:55:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:24,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:24,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:24,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200562465] [2022-01-10 17:55:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200562465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:24,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:24,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:55:24,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657497728] [2022-01-10 17:55:24,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:24,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:55:24,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:55:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:55:24,193 INFO L87 Difference]: Start difference. First operand 22361 states and 40539 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:29,501 INFO L93 Difference]: Finished difference Result 84452 states and 152911 transitions. [2022-01-10 17:55:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 17:55:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 17:55:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:29,608 INFO L225 Difference]: With dead ends: 84452 [2022-01-10 17:55:29,608 INFO L226 Difference]: Without dead ends: 65463 [2022-01-10 17:55:29,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-01-10 17:55:29,629 INFO L933 BasicCegarLoop]: 6087 mSDtfsCounter, 22287 mSDsluCounter, 21041 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22287 SdHoareTripleChecker+Valid, 27128 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:29,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22287 Valid, 27128 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 17:55:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65463 states. [2022-01-10 17:55:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65463 to 26825. [2022-01-10 17:55:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26825 states, 26821 states have (on average 1.807352447708885) internal successors, (48475), 26824 states have internal predecessors, (48475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26825 states to 26825 states and 48475 transitions. [2022-01-10 17:55:31,866 INFO L78 Accepts]: Start accepts. Automaton has 26825 states and 48475 transitions. Word has length 98 [2022-01-10 17:55:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:31,866 INFO L470 AbstractCegarLoop]: Abstraction has 26825 states and 48475 transitions. [2022-01-10 17:55:31,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26825 states and 48475 transitions. [2022-01-10 17:55:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 17:55:31,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:31,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:31,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 17:55:31,870 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1859846107, now seen corresponding path program 1 times [2022-01-10 17:55:31,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009209253] [2022-01-10 17:55:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:31,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:31,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009209253] [2022-01-10 17:55:31,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009209253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:31,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:31,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:31,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108959119] [2022-01-10 17:55:31,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:31,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:31,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:31,969 INFO L87 Difference]: Start difference. First operand 26825 states and 48475 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:35,454 INFO L93 Difference]: Finished difference Result 63438 states and 114621 transitions. [2022-01-10 17:55:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:55:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 17:55:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:35,519 INFO L225 Difference]: With dead ends: 63438 [2022-01-10 17:55:35,519 INFO L226 Difference]: Without dead ends: 43961 [2022-01-10 17:55:35,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:35,534 INFO L933 BasicCegarLoop]: 6184 mSDtfsCounter, 11694 mSDsluCounter, 14181 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11694 SdHoareTripleChecker+Valid, 20365 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:35,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11694 Valid, 20365 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:55:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43961 states. [2022-01-10 17:55:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43961 to 27015. [2022-01-10 17:55:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27015 states, 27011 states have (on average 1.8049313242752953) internal successors, (48753), 27014 states have internal predecessors, (48753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27015 states to 27015 states and 48753 transitions. [2022-01-10 17:55:37,666 INFO L78 Accepts]: Start accepts. Automaton has 27015 states and 48753 transitions. Word has length 98 [2022-01-10 17:55:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:37,666 INFO L470 AbstractCegarLoop]: Abstraction has 27015 states and 48753 transitions. [2022-01-10 17:55:37,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 27015 states and 48753 transitions. [2022-01-10 17:55:37,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 17:55:37,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:37,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:37,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 17:55:37,684 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 920669060, now seen corresponding path program 1 times [2022-01-10 17:55:37,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:37,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780285842] [2022-01-10 17:55:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:37,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:55:37,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:37,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780285842] [2022-01-10 17:55:37,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780285842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:37,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:37,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:55:37,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788520067] [2022-01-10 17:55:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:55:37,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:55:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:37,836 INFO L87 Difference]: Start difference. First operand 27015 states and 48753 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)