/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_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:10:37,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:10:37,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:10:37,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:10:37,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:10:37,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:10:37,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:10:37,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:10:37,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:10:37,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:10:37,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:10:37,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:10:37,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:10:37,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:10:37,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:10:37,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:10:37,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:10:37,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:10:37,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:10:37,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:10:37,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:10:37,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:10:37,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:10:37,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:10:37,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:10:37,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:10:37,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:10:37,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:10:37,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:10:37,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:10:37,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:10:37,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:10:37,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:10:37,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:10:37,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:10:37,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:10:37,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:10:37,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:10:37,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:10:37,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:10:37,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:10:37,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:10:37,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:10:37,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:10:37,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:10:37,147 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:10:37,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:10:37,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:10:37,148 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:10:37,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:10:37,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:10:37,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:10:37,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:10:37,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:10:37,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:10:37,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:10:37,149 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:10:37,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:10:37,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:10:37,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:10:37,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:10:37,152 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:10:37,152 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:10:37,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:10:37,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:10:37,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:10:37,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:10:37,370 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:10:37,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c [2022-01-11 01:10:37,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098bc21fa/67ab50cf76084079b4366f1929b0e3b6/FLAG761a4a13d [2022-01-11 01:10:38,202 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:10:38,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c [2022-01-11 01:10:38,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098bc21fa/67ab50cf76084079b4366f1929b0e3b6/FLAG761a4a13d [2022-01-11 01:10:38,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098bc21fa/67ab50cf76084079b4366f1929b0e3b6 [2022-01-11 01:10:38,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:10:38,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:10:38,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:10:38,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:10:38,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:10:38,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:10:38" (1/1) ... [2022-01-11 01:10:38,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:38, skipping insertion in model container [2022-01-11 01:10:38,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:10:38" (1/1) ... [2022-01-11 01:10:38,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:10:38,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:10:40,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2022-01-11 01:10:40,191 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2022-01-11 01:10:40,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:10:40,370 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:10:40,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2022-01-11 01:10:41,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2022-01-11 01:10:41,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:10:41,066 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:10:41,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41 WrapperNode [2022-01-11 01:10:41,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:10:41,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:10:41,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:10:41,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:10:41,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,573 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 54, calls inlined = 123, statements flattened = 13985 [2022-01-11 01:10:41,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:10:41,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:10:41,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:10:41,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:10:41,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:10:41,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:10:41,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:10:41,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:10:41,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (1/1) ... [2022-01-11 01:10:41,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:10:41,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:10:41,970 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) [2022-01-11 01:10:41,999 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 [2022-01-11 01:10:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:10:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:10:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:10:42,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:10:42,118 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:10:42,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:10:48,717 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:10:48,742 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:10:48,742 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-11 01:10:48,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:10:48 BoogieIcfgContainer [2022-01-11 01:10:48,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:10:48,764 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:10:48,765 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:10:48,765 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:10:48,767 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:10:48" (1/1) ... [2022-01-11 01:10:50,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:10:50 BasicIcfg [2022-01-11 01:10:50,300 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:10:50,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:10:50,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:10:50,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:10:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:10:38" (1/4) ... [2022-01-11 01:10:50,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff3d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:10:50, skipping insertion in model container [2022-01-11 01:10:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:10:41" (2/4) ... [2022-01-11 01:10:50,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff3d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:10:50, skipping insertion in model container [2022-01-11 01:10:50,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:10:48" (3/4) ... [2022-01-11 01:10:50,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff3d7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:10:50, skipping insertion in model container [2022-01-11 01:10:50,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:10:50" (4/4) ... [2022-01-11 01:10:50,305 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.06.cil-2.cTransformedIcfg [2022-01-11 01:10:50,308 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:10:50,308 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:10:50,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:10:50,353 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 [2022-01-11 01:10:50,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:10:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 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) [2022-01-11 01:10:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:50,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:50,558 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] [2022-01-11 01:10:50,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 58261984, now seen corresponding path program 1 times [2022-01-11 01:10:50,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555815601] [2022-01-11 01:10:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:50,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:50,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:50,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555815601] [2022-01-11 01:10:50,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555815601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:50,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:50,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:50,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405035612] [2022-01-11 01:10:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:50,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:50,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:50,884 INFO L87 Difference]: Start difference. First operand has 2871 states, 2868 states have (on average 1.788702928870293) internal successors, (5130), 2870 states have internal predecessors, (5130), 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 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:51,104 INFO L93 Difference]: Finished difference Result 6273 states and 11062 transitions. [2022-01-11 01:10:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:51,130 INFO L225 Difference]: With dead ends: 6273 [2022-01-11 01:10:51,130 INFO L226 Difference]: Without dead ends: 3345 [2022-01-11 01:10:51,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,142 INFO L933 BasicCegarLoop]: 5041 mSDtfsCounter, 4956 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 5914 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:51,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 5914 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:10:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2022-01-11 01:10:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3343. [2022-01-11 01:10:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7291230170607603) internal successors, (5777), 3342 states have internal predecessors, (5777), 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) [2022-01-11 01:10:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5777 transitions. [2022-01-11 01:10:51,266 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5777 transitions. Word has length 99 [2022-01-11 01:10:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:51,267 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5777 transitions. [2022-01-11 01:10:51,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5777 transitions. [2022-01-11 01:10:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:51,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:51,270 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] [2022-01-11 01:10:51,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:10:51,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1226458239, now seen corresponding path program 1 times [2022-01-11 01:10:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031794545] [2022-01-11 01:10:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:51,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:51,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031794545] [2022-01-11 01:10:51,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031794545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:51,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:51,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:51,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705216503] [2022-01-11 01:10:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:51,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:51,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,338 INFO L87 Difference]: Start difference. First operand 3343 states and 5777 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:51,411 INFO L93 Difference]: Finished difference Result 4551 states and 7574 transitions. [2022-01-11 01:10:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:51,425 INFO L225 Difference]: With dead ends: 4551 [2022-01-11 01:10:51,426 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:51,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,430 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4959 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:51,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 4968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7267285243938941) internal successors, (5769), 3342 states have internal predecessors, (5769), 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) [2022-01-11 01:10:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5769 transitions. [2022-01-11 01:10:51,515 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5769 transitions. Word has length 99 [2022-01-11 01:10:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:51,515 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5769 transitions. [2022-01-11 01:10:51,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5769 transitions. [2022-01-11 01:10:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:51,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:51,517 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] [2022-01-11 01:10:51,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:10:51,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -237520545, now seen corresponding path program 1 times [2022-01-11 01:10:51,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:51,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044492388] [2022-01-11 01:10:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:51,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:51,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:51,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044492388] [2022-01-11 01:10:51,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044492388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:51,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:51,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:51,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277164638] [2022-01-11 01:10:51,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:51,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:51,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:51,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,572 INFO L87 Difference]: Start difference. First operand 3343 states and 5769 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:51,650 INFO L93 Difference]: Finished difference Result 4550 states and 7557 transitions. [2022-01-11 01:10:51,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:51,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:51,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:51,664 INFO L225 Difference]: With dead ends: 4550 [2022-01-11 01:10:51,664 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:51,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,668 INFO L933 BasicCegarLoop]: 4963 mSDtfsCounter, 4953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:51,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 4963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.724334031727028) internal successors, (5761), 3342 states have internal predecessors, (5761), 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) [2022-01-11 01:10:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5761 transitions. [2022-01-11 01:10:51,750 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5761 transitions. Word has length 99 [2022-01-11 01:10:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:51,751 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5761 transitions. [2022-01-11 01:10:51,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5761 transitions. [2022-01-11 01:10:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:51,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:51,752 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] [2022-01-11 01:10:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:10:51,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1932011647, now seen corresponding path program 1 times [2022-01-11 01:10:51,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032586340] [2022-01-11 01:10:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:51,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:51,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:51,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032586340] [2022-01-11 01:10:51,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032586340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:51,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:51,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:51,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169367639] [2022-01-11 01:10:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,807 INFO L87 Difference]: Start difference. First operand 3343 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:51,879 INFO L93 Difference]: Finished difference Result 4549 states and 7540 transitions. [2022-01-11 01:10:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:51,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:51,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:51,890 INFO L225 Difference]: With dead ends: 4549 [2022-01-11 01:10:51,890 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:51,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:51,900 INFO L933 BasicCegarLoop]: 4958 mSDtfsCounter, 4947 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:51,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 4958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7219395390601617) internal successors, (5753), 3342 states have internal predecessors, (5753), 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) [2022-01-11 01:10:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5753 transitions. [2022-01-11 01:10:51,969 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5753 transitions. Word has length 99 [2022-01-11 01:10:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:51,969 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5753 transitions. [2022-01-11 01:10:51,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5753 transitions. [2022-01-11 01:10:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:51,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:51,970 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] [2022-01-11 01:10:51,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:10:51,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 477975903, now seen corresponding path program 1 times [2022-01-11 01:10:51,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819383701] [2022-01-11 01:10:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:51,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:52,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:52,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819383701] [2022-01-11 01:10:52,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819383701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:52,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:52,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826609359] [2022-01-11 01:10:52,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:52,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,032 INFO L87 Difference]: Start difference. First operand 3343 states and 5753 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:52,119 INFO L93 Difference]: Finished difference Result 4548 states and 7523 transitions. [2022-01-11 01:10:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:52,132 INFO L225 Difference]: With dead ends: 4548 [2022-01-11 01:10:52,133 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:52,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,138 INFO L933 BasicCegarLoop]: 4953 mSDtfsCounter, 4941 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:52,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 4953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7195450463932955) internal successors, (5745), 3342 states have internal predecessors, (5745), 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) [2022-01-11 01:10:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5745 transitions. [2022-01-11 01:10:52,426 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5745 transitions. Word has length 99 [2022-01-11 01:10:52,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:52,426 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5745 transitions. [2022-01-11 01:10:52,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5745 transitions. [2022-01-11 01:10:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:52,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:52,427 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] [2022-01-11 01:10:52,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:10:52,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:52,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1261354878, now seen corresponding path program 1 times [2022-01-11 01:10:52,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:52,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655363135] [2022-01-11 01:10:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:52,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:52,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:52,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655363135] [2022-01-11 01:10:52,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655363135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:52,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:52,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:52,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979698190] [2022-01-11 01:10:52,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:52,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:52,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,484 INFO L87 Difference]: Start difference. First operand 3343 states and 5745 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:52,562 INFO L93 Difference]: Finished difference Result 4547 states and 7506 transitions. [2022-01-11 01:10:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:52,573 INFO L225 Difference]: With dead ends: 4547 [2022-01-11 01:10:52,573 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:52,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,576 INFO L933 BasicCegarLoop]: 4948 mSDtfsCounter, 4935 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:52,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 4948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:52,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.717150553726429) internal successors, (5737), 3342 states have internal predecessors, (5737), 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) [2022-01-11 01:10:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5737 transitions. [2022-01-11 01:10:52,659 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5737 transitions. Word has length 99 [2022-01-11 01:10:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:52,659 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5737 transitions. [2022-01-11 01:10:52,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5737 transitions. [2022-01-11 01:10:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:52,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:52,662 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] [2022-01-11 01:10:52,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:10:52,662 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 665429086, now seen corresponding path program 1 times [2022-01-11 01:10:52,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610338161] [2022-01-11 01:10:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:52,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610338161] [2022-01-11 01:10:52,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610338161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:52,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:52,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:52,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892585340] [2022-01-11 01:10:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:52,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:52,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,706 INFO L87 Difference]: Start difference. First operand 3343 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:52,784 INFO L93 Difference]: Finished difference Result 4546 states and 7489 transitions. [2022-01-11 01:10:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:52,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:52,808 INFO L225 Difference]: With dead ends: 4546 [2022-01-11 01:10:52,808 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:52,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:52,812 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 4929 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:52,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 4943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.714756061059563) internal successors, (5729), 3342 states have internal predecessors, (5729), 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) [2022-01-11 01:10:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5729 transitions. [2022-01-11 01:10:52,985 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5729 transitions. Word has length 99 [2022-01-11 01:10:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:52,985 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5729 transitions. [2022-01-11 01:10:52,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5729 transitions. [2022-01-11 01:10:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:52,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:52,987 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] [2022-01-11 01:10:52,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:10:52,987 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1338942334, now seen corresponding path program 1 times [2022-01-11 01:10:52,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160639841] [2022-01-11 01:10:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:52,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:53,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160639841] [2022-01-11 01:10:53,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160639841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:53,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:53,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:53,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99937804] [2022-01-11 01:10:53,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:53,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:53,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,038 INFO L87 Difference]: Start difference. First operand 3343 states and 5729 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:53,122 INFO L93 Difference]: Finished difference Result 4545 states and 7472 transitions. [2022-01-11 01:10:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:53,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:53,130 INFO L225 Difference]: With dead ends: 4545 [2022-01-11 01:10:53,130 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:53,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,133 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 4842 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 4988 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:53,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 4988 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7075725830589643) internal successors, (5705), 3342 states have internal predecessors, (5705), 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) [2022-01-11 01:10:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5705 transitions. [2022-01-11 01:10:53,207 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5705 transitions. Word has length 99 [2022-01-11 01:10:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5705 transitions. [2022-01-11 01:10:53,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5705 transitions. [2022-01-11 01:10:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:53,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:53,210 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] [2022-01-11 01:10:53,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:10:53,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 845788381, now seen corresponding path program 1 times [2022-01-11 01:10:53,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:53,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94284939] [2022-01-11 01:10:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:53,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:53,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:53,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94284939] [2022-01-11 01:10:53,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94284939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:53,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:53,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:53,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668940514] [2022-01-11 01:10:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:53,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:53,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,252 INFO L87 Difference]: Start difference. First operand 3343 states and 5705 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:53,327 INFO L93 Difference]: Finished difference Result 4544 states and 7423 transitions. [2022-01-11 01:10:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:53,333 INFO L225 Difference]: With dead ends: 4544 [2022-01-11 01:10:53,333 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:53,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,336 INFO L933 BasicCegarLoop]: 4906 mSDtfsCounter, 4828 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:53,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4828 Valid, 4973 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:53,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.7003891050583657) internal successors, (5681), 3342 states have internal predecessors, (5681), 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) [2022-01-11 01:10:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5681 transitions. [2022-01-11 01:10:53,406 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5681 transitions. Word has length 99 [2022-01-11 01:10:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:53,406 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5681 transitions. [2022-01-11 01:10:53,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5681 transitions. [2022-01-11 01:10:53,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:53,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:53,409 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] [2022-01-11 01:10:53,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:10:53,410 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1779661253, now seen corresponding path program 1 times [2022-01-11 01:10:53,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:53,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541924420] [2022-01-11 01:10:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:53,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:53,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:53,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541924420] [2022-01-11 01:10:53,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541924420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:53,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:53,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:53,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741103402] [2022-01-11 01:10:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:53,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:53,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,448 INFO L87 Difference]: Start difference. First operand 3343 states and 5681 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:53,535 INFO L93 Difference]: Finished difference Result 4543 states and 7374 transitions. [2022-01-11 01:10:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:53,540 INFO L225 Difference]: With dead ends: 4543 [2022-01-11 01:10:53,541 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:53,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,544 INFO L933 BasicCegarLoop]: 4892 mSDtfsCounter, 4814 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 4958 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:53,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 4958 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:53,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6932056270577671) internal successors, (5657), 3342 states have internal predecessors, (5657), 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) [2022-01-11 01:10:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5657 transitions. [2022-01-11 01:10:53,618 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5657 transitions. Word has length 99 [2022-01-11 01:10:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:53,618 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5657 transitions. [2022-01-11 01:10:53,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5657 transitions. [2022-01-11 01:10:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:53,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:53,619 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] [2022-01-11 01:10:53,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:10:53,620 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1460873702, now seen corresponding path program 1 times [2022-01-11 01:10:53,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:53,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485485124] [2022-01-11 01:10:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:53,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:53,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:53,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485485124] [2022-01-11 01:10:53,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485485124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:53,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:53,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:53,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825607018] [2022-01-11 01:10:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:53,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:53,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:53,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,652 INFO L87 Difference]: Start difference. First operand 3343 states and 5657 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:53,767 INFO L93 Difference]: Finished difference Result 4542 states and 7325 transitions. [2022-01-11 01:10:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:53,773 INFO L225 Difference]: With dead ends: 4542 [2022-01-11 01:10:53,773 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:53,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,775 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4800 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 4943 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:53,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4800 Valid, 4943 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:53,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6860221490571685) internal successors, (5633), 3342 states have internal predecessors, (5633), 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) [2022-01-11 01:10:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5633 transitions. [2022-01-11 01:10:53,833 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5633 transitions. Word has length 99 [2022-01-11 01:10:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:53,833 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5633 transitions. [2022-01-11 01:10:53,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5633 transitions. [2022-01-11 01:10:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:53,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:53,834 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] [2022-01-11 01:10:53,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:10:53,835 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1583723655, now seen corresponding path program 1 times [2022-01-11 01:10:53,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:53,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312261716] [2022-01-11 01:10:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:53,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:53,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312261716] [2022-01-11 01:10:53,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312261716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:53,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:53,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:53,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346276975] [2022-01-11 01:10:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:53,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:53,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,863 INFO L87 Difference]: Start difference. First operand 3343 states and 5633 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:53,938 INFO L93 Difference]: Finished difference Result 4541 states and 7276 transitions. [2022-01-11 01:10:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:53,944 INFO L225 Difference]: With dead ends: 4541 [2022-01-11 01:10:53,944 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:53,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:53,946 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 4786 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:53,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 4928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:53,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.67883867105657) internal successors, (5609), 3342 states have internal predecessors, (5609), 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) [2022-01-11 01:10:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5609 transitions. [2022-01-11 01:10:54,006 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5609 transitions. Word has length 99 [2022-01-11 01:10:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:54,006 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5609 transitions. [2022-01-11 01:10:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5609 transitions. [2022-01-11 01:10:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:54,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:54,007 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] [2022-01-11 01:10:54,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:10:54,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:54,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2109498920, now seen corresponding path program 1 times [2022-01-11 01:10:54,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:54,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669451942] [2022-01-11 01:10:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:54,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:54,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669451942] [2022-01-11 01:10:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669451942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:54,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:54,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:54,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909536540] [2022-01-11 01:10:54,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:54,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:54,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:54,046 INFO L87 Difference]: Start difference. First operand 3343 states and 5609 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:54,130 INFO L93 Difference]: Finished difference Result 4540 states and 7227 transitions. [2022-01-11 01:10:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:54,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:54,137 INFO L225 Difference]: With dead ends: 4540 [2022-01-11 01:10:54,137 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:54,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:54,141 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 4772 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:54,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 4913 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6716551930559713) internal successors, (5585), 3342 states have internal predecessors, (5585), 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) [2022-01-11 01:10:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5585 transitions. [2022-01-11 01:10:54,209 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5585 transitions. Word has length 99 [2022-01-11 01:10:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:54,210 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5585 transitions. [2022-01-11 01:10:54,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5585 transitions. [2022-01-11 01:10:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:54,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:54,211 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] [2022-01-11 01:10:54,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:10:54,211 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:54,211 INFO L85 PathProgramCache]: Analyzing trace with hash 674921911, now seen corresponding path program 1 times [2022-01-11 01:10:54,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:54,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4826071] [2022-01-11 01:10:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:54,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:54,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:54,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4826071] [2022-01-11 01:10:54,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4826071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:54,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:54,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:54,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673109303] [2022-01-11 01:10:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:54,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:54,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:54,239 INFO L87 Difference]: Start difference. First operand 3343 states and 5585 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:54,324 INFO L93 Difference]: Finished difference Result 4539 states and 7178 transitions. [2022-01-11 01:10:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:54,329 INFO L225 Difference]: With dead ends: 4539 [2022-01-11 01:10:54,330 INFO L226 Difference]: Without dead ends: 3343 [2022-01-11 01:10:54,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:54,332 INFO L933 BasicCegarLoop]: 4836 mSDtfsCounter, 4758 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:54,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 4898 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-01-11 01:10:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3343. [2022-01-11 01:10:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.6644717150553727) internal successors, (5561), 3342 states have internal predecessors, (5561), 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) [2022-01-11 01:10:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 5561 transitions. [2022-01-11 01:10:54,418 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 5561 transitions. Word has length 99 [2022-01-11 01:10:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:54,418 INFO L470 AbstractCegarLoop]: Abstraction has 3343 states and 5561 transitions. [2022-01-11 01:10:54,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 5561 transitions. [2022-01-11 01:10:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:54,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:54,420 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] [2022-01-11 01:10:54,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:10:54,420 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:54,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1309635946, now seen corresponding path program 1 times [2022-01-11 01:10:54,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188863452] [2022-01-11 01:10:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:54,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:54,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:54,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188863452] [2022-01-11 01:10:54,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188863452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:54,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:54,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:10:54,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097523241] [2022-01-11 01:10:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:54,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:10:54,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:54,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:10:54,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:10:54,468 INFO L87 Difference]: Start difference. First operand 3343 states and 5561 transitions. Second operand has 5 states, 5 states have (on average 19.8) 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) [2022-01-11 01:10:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:54,692 INFO L93 Difference]: Finished difference Result 5135 states and 7947 transitions. [2022-01-11 01:10:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:10:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) 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) Word has length 99 [2022-01-11 01:10:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:54,699 INFO L225 Difference]: With dead ends: 5135 [2022-01-11 01:10:54,699 INFO L226 Difference]: Without dead ends: 3953 [2022-01-11 01:10:54,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:10:54,701 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 2369 mSDsluCounter, 13177 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 18087 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:54,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2369 Valid, 18087 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:10:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2022-01-11 01:10:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3349. [2022-01-11 01:10:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.6585001493875111) internal successors, (5551), 3348 states have internal predecessors, (5551), 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) [2022-01-11 01:10:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5551 transitions. [2022-01-11 01:10:54,823 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5551 transitions. Word has length 99 [2022-01-11 01:10:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:54,823 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5551 transitions. [2022-01-11 01:10:54,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) 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) [2022-01-11 01:10:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5551 transitions. [2022-01-11 01:10:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:54,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:54,824 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] [2022-01-11 01:10:54,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:10:54,824 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1818635031, now seen corresponding path program 1 times [2022-01-11 01:10:54,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135123727] [2022-01-11 01:10:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:54,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:54,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:54,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135123727] [2022-01-11 01:10:54,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135123727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:54,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:54,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:10:54,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787930387] [2022-01-11 01:10:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:54,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:10:54,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:10:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:10:54,871 INFO L87 Difference]: Start difference. First operand 3349 states and 5551 transitions. Second operand has 5 states, 5 states have (on average 19.8) 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) [2022-01-11 01:10:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:55,102 INFO L93 Difference]: Finished difference Result 5534 states and 8421 transitions. [2022-01-11 01:10:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:10:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) 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) Word has length 99 [2022-01-11 01:10:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:55,110 INFO L225 Difference]: With dead ends: 5534 [2022-01-11 01:10:55,110 INFO L226 Difference]: Without dead ends: 4381 [2022-01-11 01:10:55,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:10:55,112 INFO L933 BasicCegarLoop]: 4809 mSDtfsCounter, 1808 mSDsluCounter, 14197 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:55,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1808 Valid, 19006 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:10:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-11 01:10:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3355. [2022-01-11 01:10:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 1.6525499552639427) internal successors, (5541), 3354 states have internal predecessors, (5541), 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) [2022-01-11 01:10:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 5541 transitions. [2022-01-11 01:10:55,205 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 5541 transitions. Word has length 99 [2022-01-11 01:10:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:55,205 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 5541 transitions. [2022-01-11 01:10:55,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) 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) [2022-01-11 01:10:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 5541 transitions. [2022-01-11 01:10:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 01:10:55,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:55,206 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] [2022-01-11 01:10:55,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:10:55,206 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2125532328, now seen corresponding path program 1 times [2022-01-11 01:10:55,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:55,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002703613] [2022-01-11 01:10:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:55,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:55,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:55,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002703613] [2022-01-11 01:10:55,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002703613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:55,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:55,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:10:55,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97429377] [2022-01-11 01:10:55,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:55,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:55,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:55,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:55,242 INFO L87 Difference]: Start difference. First operand 3355 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:55,422 INFO L93 Difference]: Finished difference Result 5678 states and 8530 transitions. [2022-01-11 01:10:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) Word has length 99 [2022-01-11 01:10:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:55,429 INFO L225 Difference]: With dead ends: 5678 [2022-01-11 01:10:55,430 INFO L226 Difference]: Without dead ends: 4472 [2022-01-11 01:10:55,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:55,432 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4708 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:55,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4708 Valid, 5560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:55,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2022-01-11 01:10:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 4370. [2022-01-11 01:10:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4368 states have (on average 1.5647893772893773) internal successors, (6835), 4369 states have internal predecessors, (6835), 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) [2022-01-11 01:10:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6835 transitions. [2022-01-11 01:10:55,556 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6835 transitions. Word has length 99 [2022-01-11 01:10:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:55,557 INFO L470 AbstractCegarLoop]: Abstraction has 4370 states and 6835 transitions. [2022-01-11 01:10:55,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 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) [2022-01-11 01:10:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6835 transitions. [2022-01-11 01:10:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:10:55,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:55,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:10:55,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:10:55,559 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1987499719, now seen corresponding path program 1 times [2022-01-11 01:10:55,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207243679] [2022-01-11 01:10:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:55,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:55,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:55,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207243679] [2022-01-11 01:10:55,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207243679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:55,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:55,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:10:55,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258806596] [2022-01-11 01:10:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:55,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:55,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:55,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:55,597 INFO L87 Difference]: Start difference. First operand 4370 states and 6835 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 01:10:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:55,829 INFO L93 Difference]: Finished difference Result 8667 states and 12347 transitions. [2022-01-11 01:10:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:55,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-01-11 01:10:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:55,840 INFO L225 Difference]: With dead ends: 8667 [2022-01-11 01:10:55,840 INFO L226 Difference]: Without dead ends: 6452 [2022-01-11 01:10:55,843 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 [2022-01-11 01:10:55,843 INFO L933 BasicCegarLoop]: 4816 mSDtfsCounter, 4723 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 5557 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:55,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 5557 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-11 01:10:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 6278. [2022-01-11 01:10:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6276 states have (on average 1.4765774378585086) internal successors, (9267), 6277 states have internal predecessors, (9267), 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) [2022-01-11 01:10:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 9267 transitions. [2022-01-11 01:10:56,106 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 9267 transitions. Word has length 160 [2022-01-11 01:10:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:56,107 INFO L470 AbstractCegarLoop]: Abstraction has 6278 states and 9267 transitions. [2022-01-11 01:10:56,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 01:10:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 9267 transitions. [2022-01-11 01:10:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:10:56,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:56,110 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:10:56,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:10:56,110 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash 188793081, now seen corresponding path program 1 times [2022-01-11 01:10:56,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:56,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921950016] [2022-01-11 01:10:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:56,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:56,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921950016] [2022-01-11 01:10:56,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921950016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:56,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:56,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:10:56,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835439624] [2022-01-11 01:10:56,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:56,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:56,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:56,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:56,159 INFO L87 Difference]: Start difference. First operand 6278 states and 9267 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 01:10:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:56,646 INFO L93 Difference]: Finished difference Result 14139 states and 19223 transitions. [2022-01-11 01:10:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:56,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-01-11 01:10:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:56,664 INFO L225 Difference]: With dead ends: 14139 [2022-01-11 01:10:56,664 INFO L226 Difference]: Without dead ends: 10071 [2022-01-11 01:10:56,671 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 [2022-01-11 01:10:56,671 INFO L933 BasicCegarLoop]: 5220 mSDtfsCounter, 4583 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4583 SdHoareTripleChecker+Valid, 6070 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:56,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4583 Valid, 6070 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2022-01-11 01:10:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 10069. [2022-01-11 01:10:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 10067 states have (on average 1.3893910797655706) internal successors, (13987), 10068 states have internal predecessors, (13987), 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) [2022-01-11 01:10:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13987 transitions. [2022-01-11 01:10:57,142 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13987 transitions. Word has length 160 [2022-01-11 01:10:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:57,142 INFO L470 AbstractCegarLoop]: Abstraction has 10069 states and 13987 transitions. [2022-01-11 01:10:57,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 01:10:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13987 transitions. [2022-01-11 01:10:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 01:10:57,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:57,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:10:57,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:10:57,147 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash -116841448, now seen corresponding path program 1 times [2022-01-11 01:10:57,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:57,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908791265] [2022-01-11 01:10:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:57,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:10:57,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:57,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908791265] [2022-01-11 01:10:57,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908791265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:57,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:57,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:10:57,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889610741] [2022-01-11 01:10:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:57,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:57,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:57,177 INFO L87 Difference]: Start difference. First operand 10069 states and 13987 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-01-11 01:10:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:57,555 INFO L93 Difference]: Finished difference Result 17845 states and 23812 transitions. [2022-01-11 01:10:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 160 [2022-01-11 01:10:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:57,574 INFO L225 Difference]: With dead ends: 17845 [2022-01-11 01:10:57,574 INFO L226 Difference]: Without dead ends: 9986 [2022-01-11 01:10:57,584 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 [2022-01-11 01:10:57,584 INFO L933 BasicCegarLoop]: 4826 mSDtfsCounter, 864 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:57,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 8784 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2022-01-11 01:10:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2022-01-11 01:10:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9984 states have (on average 1.391025641025641) internal successors, (13888), 9985 states have internal predecessors, (13888), 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) [2022-01-11 01:10:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13888 transitions. [2022-01-11 01:10:58,006 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13888 transitions. Word has length 160 [2022-01-11 01:10:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:58,006 INFO L470 AbstractCegarLoop]: Abstraction has 9986 states and 13888 transitions. [2022-01-11 01:10:58,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-01-11 01:10:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13888 transitions. [2022-01-11 01:10:58,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 01:10:58,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:58,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:10:58,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:10:58,010 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:58,011 INFO L85 PathProgramCache]: Analyzing trace with hash 886799409, now seen corresponding path program 1 times [2022-01-11 01:10:58,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:58,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398595397] [2022-01-11 01:10:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:58,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:10:58,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:58,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398595397] [2022-01-11 01:10:58,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398595397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:58,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:58,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:10:58,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390273874] [2022-01-11 01:10:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:58,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:58,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:58,048 INFO L87 Difference]: Start difference. First operand 9986 states and 13888 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-01-11 01:10:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:10:58,745 INFO L93 Difference]: Finished difference Result 25140 states and 32946 transitions. [2022-01-11 01:10:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:10:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2022-01-11 01:10:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:10:58,774 INFO L225 Difference]: With dead ends: 25140 [2022-01-11 01:10:58,774 INFO L226 Difference]: Without dead ends: 17364 [2022-01-11 01:10:58,783 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 [2022-01-11 01:10:58,783 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 4724 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5858 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:10:58,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5858 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:10:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17364 states. [2022-01-11 01:10:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17364 to 16850. [2022-01-11 01:10:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16850 states, 16848 states have (on average 1.331908831908832) internal successors, (22440), 16849 states have internal predecessors, (22440), 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) [2022-01-11 01:10:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16850 states to 16850 states and 22440 transitions. [2022-01-11 01:10:59,452 INFO L78 Accepts]: Start accepts. Automaton has 16850 states and 22440 transitions. Word has length 161 [2022-01-11 01:10:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:10:59,453 INFO L470 AbstractCegarLoop]: Abstraction has 16850 states and 22440 transitions. [2022-01-11 01:10:59,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-01-11 01:10:59,453 INFO L276 IsEmpty]: Start isEmpty. Operand 16850 states and 22440 transitions. [2022-01-11 01:10:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 01:10:59,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:10:59,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:10:59,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:10:59,460 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:10:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:10:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash -456380654, now seen corresponding path program 1 times [2022-01-11 01:10:59,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:10:59,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575204522] [2022-01-11 01:10:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:10:59,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:10:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:10:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:10:59,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:10:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575204522] [2022-01-11 01:10:59,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575204522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:10:59,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:10:59,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:10:59,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653583424] [2022-01-11 01:10:59,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:10:59,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:10:59,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:10:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:10:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:10:59,486 INFO L87 Difference]: Start difference. First operand 16850 states and 22440 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-11 01:11:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:00,389 INFO L93 Difference]: Finished difference Result 31452 states and 40772 transitions. [2022-01-11 01:11:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 161 [2022-01-11 01:11:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:00,421 INFO L225 Difference]: With dead ends: 31452 [2022-01-11 01:11:00,421 INFO L226 Difference]: Without dead ends: 16768 [2022-01-11 01:11:00,440 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 [2022-01-11 01:11:00,441 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 862 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:00,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 8783 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:00,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2022-01-11 01:11:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 16768. [2022-01-11 01:11:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16766 states have (on average 1.3326374806155314) internal successors, (22343), 16767 states have internal predecessors, (22343), 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) [2022-01-11 01:11:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 22343 transitions. [2022-01-11 01:11:01,204 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 22343 transitions. Word has length 161 [2022-01-11 01:11:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:01,204 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 22343 transitions. [2022-01-11 01:11:01,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-11 01:11:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 22343 transitions. [2022-01-11 01:11:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 01:11:01,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:01,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:01,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:11:01,211 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1966576152, now seen corresponding path program 1 times [2022-01-11 01:11:01,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:01,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893343529] [2022-01-11 01:11:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:01,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:11:01,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893343529] [2022-01-11 01:11:01,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893343529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:01,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:01,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:01,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676308879] [2022-01-11 01:11:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:01,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:01,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:01,277 INFO L87 Difference]: Start difference. First operand 16768 states and 22343 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-01-11 01:11:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:02,557 INFO L93 Difference]: Finished difference Result 44901 states and 57575 transitions. [2022-01-11 01:11:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:02,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2022-01-11 01:11:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:02,601 INFO L225 Difference]: With dead ends: 44901 [2022-01-11 01:11:02,601 INFO L226 Difference]: Without dead ends: 30343 [2022-01-11 01:11:02,616 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 [2022-01-11 01:11:02,616 INFO L933 BasicCegarLoop]: 5020 mSDtfsCounter, 4724 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5857 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:02,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5857 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30343 states. [2022-01-11 01:11:03,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30343 to 29541. [2022-01-11 01:11:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29541 states, 29539 states have (on average 1.2947290023358948) internal successors, (38245), 29540 states have internal predecessors, (38245), 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) [2022-01-11 01:11:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29541 states to 29541 states and 38245 transitions. [2022-01-11 01:11:04,057 INFO L78 Accepts]: Start accepts. Automaton has 29541 states and 38245 transitions. Word has length 162 [2022-01-11 01:11:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:04,057 INFO L470 AbstractCegarLoop]: Abstraction has 29541 states and 38245 transitions. [2022-01-11 01:11:04,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-01-11 01:11:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 29541 states and 38245 transitions. [2022-01-11 01:11:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 01:11:04,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:04,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:04,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:11:04,068 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:04,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1912459259, now seen corresponding path program 1 times [2022-01-11 01:11:04,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:04,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346979936] [2022-01-11 01:11:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:04,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:11:04,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:04,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346979936] [2022-01-11 01:11:04,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346979936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:04,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:04,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:04,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444689487] [2022-01-11 01:11:04,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:04,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:04,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:04,092 INFO L87 Difference]: Start difference. First operand 29541 states and 38245 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-01-11 01:11:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:05,501 INFO L93 Difference]: Finished difference Result 56828 states and 72376 transitions. [2022-01-11 01:11:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:05,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2022-01-11 01:11:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:05,549 INFO L225 Difference]: With dead ends: 56828 [2022-01-11 01:11:05,550 INFO L226 Difference]: Without dead ends: 29460 [2022-01-11 01:11:05,577 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 [2022-01-11 01:11:05,578 INFO L933 BasicCegarLoop]: 4824 mSDtfsCounter, 860 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 8782 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:05,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 8782 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-11 01:11:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 29460. [2022-01-11 01:11:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29460 states, 29458 states have (on average 1.295064159141829) internal successors, (38150), 29459 states have internal predecessors, (38150), 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) [2022-01-11 01:11:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29460 states to 29460 states and 38150 transitions. [2022-01-11 01:11:07,366 INFO L78 Accepts]: Start accepts. Automaton has 29460 states and 38150 transitions. Word has length 162 [2022-01-11 01:11:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:07,366 INFO L470 AbstractCegarLoop]: Abstraction has 29460 states and 38150 transitions. [2022-01-11 01:11:07,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-01-11 01:11:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 29460 states and 38150 transitions. [2022-01-11 01:11:07,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 01:11:07,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:07,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:07,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:11:07,382 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:07,382 INFO L85 PathProgramCache]: Analyzing trace with hash 40185600, now seen corresponding path program 1 times [2022-01-11 01:11:07,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:07,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492178514] [2022-01-11 01:11:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:07,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:11:07,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:07,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492178514] [2022-01-11 01:11:07,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492178514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:07,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:07,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:07,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864502829] [2022-01-11 01:11:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:07,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:07,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:07,504 INFO L87 Difference]: Start difference. First operand 29460 states and 38150 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-01-11 01:11:10,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:10,096 INFO L93 Difference]: Finished difference Result 81560 states and 103188 transitions. [2022-01-11 01:11:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:10,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-01-11 01:11:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:10,193 INFO L225 Difference]: With dead ends: 81560 [2022-01-11 01:11:10,193 INFO L226 Difference]: Without dead ends: 54310 [2022-01-11 01:11:10,225 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 [2022-01-11 01:11:10,226 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 4654 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 5840 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:10,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 5840 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:10,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54310 states. [2022-01-11 01:11:12,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54310 to 53156. [2022-01-11 01:11:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53156 states, 53154 states have (on average 1.27181397448922) internal successors, (67602), 53155 states have internal predecessors, (67602), 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) [2022-01-11 01:11:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53156 states to 53156 states and 67602 transitions. [2022-01-11 01:11:13,095 INFO L78 Accepts]: Start accepts. Automaton has 53156 states and 67602 transitions. Word has length 163 [2022-01-11 01:11:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:13,095 INFO L470 AbstractCegarLoop]: Abstraction has 53156 states and 67602 transitions. [2022-01-11 01:11:13,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-01-11 01:11:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 53156 states and 67602 transitions. [2022-01-11 01:11:13,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 01:11:13,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:13,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:13,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:11:13,112 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash 811104480, now seen corresponding path program 1 times [2022-01-11 01:11:13,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:13,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408644482] [2022-01-11 01:11:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:13,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:11:13,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:13,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408644482] [2022-01-11 01:11:13,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408644482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:13,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:13,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:13,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793731990] [2022-01-11 01:11:13,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:13,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:13,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:13,140 INFO L87 Difference]: Start difference. First operand 53156 states and 67602 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-01-11 01:11:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:16,121 INFO L93 Difference]: Finished difference Result 104052 states and 131084 transitions. [2022-01-11 01:11:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:16,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 163 [2022-01-11 01:11:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:16,204 INFO L225 Difference]: With dead ends: 104052 [2022-01-11 01:11:16,204 INFO L226 Difference]: Without dead ends: 53076 [2022-01-11 01:11:16,237 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 [2022-01-11 01:11:16,239 INFO L933 BasicCegarLoop]: 4823 mSDtfsCounter, 858 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:16,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 8781 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53076 states. [2022-01-11 01:11:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53076 to 53076. [2022-01-11 01:11:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53076 states, 53074 states have (on average 1.271978746655613) internal successors, (67509), 53075 states have internal predecessors, (67509), 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) [2022-01-11 01:11:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53076 states to 53076 states and 67509 transitions. [2022-01-11 01:11:19,275 INFO L78 Accepts]: Start accepts. Automaton has 53076 states and 67509 transitions. Word has length 163 [2022-01-11 01:11:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:19,276 INFO L470 AbstractCegarLoop]: Abstraction has 53076 states and 67509 transitions. [2022-01-11 01:11:19,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-01-11 01:11:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 53076 states and 67509 transitions. [2022-01-11 01:11:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:11:19,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:19,289 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:19,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:11:19,290 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1769434718, now seen corresponding path program 1 times [2022-01-11 01:11:19,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:19,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514970057] [2022-01-11 01:11:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:19,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:11:19,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:19,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514970057] [2022-01-11 01:11:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514970057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:19,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:19,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648863079] [2022-01-11 01:11:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:19,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:19,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:19,431 INFO L87 Difference]: Start difference. First operand 53076 states and 67509 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-01-11 01:11:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:24,476 INFO L93 Difference]: Finished difference Result 149103 states and 187025 transitions. [2022-01-11 01:11:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2022-01-11 01:11:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:24,605 INFO L225 Difference]: With dead ends: 149103 [2022-01-11 01:11:24,605 INFO L226 Difference]: Without dead ends: 98237 [2022-01-11 01:11:24,640 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 [2022-01-11 01:11:24,641 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 4724 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4724 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:24,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4724 Valid, 5801 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:24,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98237 states. [2022-01-11 01:11:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98237 to 96443. [2022-01-11 01:11:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96443 states, 96441 states have (on average 1.2572142553478292) internal successors, (121247), 96442 states have internal predecessors, (121247), 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) [2022-01-11 01:11:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96443 states to 96443 states and 121247 transitions. [2022-01-11 01:11:30,504 INFO L78 Accepts]: Start accepts. Automaton has 96443 states and 121247 transitions. Word has length 164 [2022-01-11 01:11:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:11:30,505 INFO L470 AbstractCegarLoop]: Abstraction has 96443 states and 121247 transitions. [2022-01-11 01:11:30,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-01-11 01:11:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 96443 states and 121247 transitions. [2022-01-11 01:11:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 01:11:30,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:11:30,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:11:30,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:11:30,532 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:11:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:11:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1479657989, now seen corresponding path program 1 times [2022-01-11 01:11:30,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:11:30,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164783599] [2022-01-11 01:11:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:11:30,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:11:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:11:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:11:30,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:11:30,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164783599] [2022-01-11 01:11:30,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164783599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:11:30,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:11:30,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:11:30,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374016583] [2022-01-11 01:11:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:11:30,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:11:30,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:11:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:11:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:11:30,600 INFO L87 Difference]: Start difference. First operand 96443 states and 121247 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-01-11 01:11:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:11:36,335 INFO L93 Difference]: Finished difference Result 190620 states and 238368 transitions. [2022-01-11 01:11:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:11:36,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2022-01-11 01:11:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:11:36,487 INFO L225 Difference]: With dead ends: 190620 [2022-01-11 01:11:36,487 INFO L226 Difference]: Without dead ends: 96364 [2022-01-11 01:11:36,554 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 [2022-01-11 01:11:36,555 INFO L933 BasicCegarLoop]: 4822 mSDtfsCounter, 856 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 8780 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:11:36,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 8780 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:11:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96364 states.