/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:25:35,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:25:35,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:25:36,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:25:36,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:25:36,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:25:36,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:25:36,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:25:36,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:25:36,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:25:36,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:25:36,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:25:36,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:25:36,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:25:36,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:25:36,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:25:36,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:25:36,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:25:36,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:25:36,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:25:36,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:25:36,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:25:36,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:25:36,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:25:36,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:25:36,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:25:36,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:25:36,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:25:36,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:25:36,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 19:25:36,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:25:36,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:25:36,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:25:36,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:25:36,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:25:36,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:25:36,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:25:36,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:25:36,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:25:36,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:25:36,114 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:25:36,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:25:36,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:25:36,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:25:36,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:25:36,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:25:36,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:25:36,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:25:36,115 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:25:36,116 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:25:36,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:25:36,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:25:36,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:25:36,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:25:36,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:25:36,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:25:36,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:25:36,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:25:36,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:25:36,120 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:25:36,120 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:25:36,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:25:36,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:25:36,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:25:36,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:25:36,394 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:25:36,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-10 19:25:36,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902f928b6/ecbe94414a434d44a15887f7ccf16c90/FLAG6f8a0919f [2022-01-10 19:25:37,306 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:25:37,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-10 19:25:37,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902f928b6/ecbe94414a434d44a15887f7ccf16c90/FLAG6f8a0919f [2022-01-10 19:25:37,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902f928b6/ecbe94414a434d44a15887f7ccf16c90 [2022-01-10 19:25:37,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:25:37,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:25:37,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:25:37,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:25:37,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:25:37,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:25:37" (1/1) ... [2022-01-10 19:25:37,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc263bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:37, skipping insertion in model container [2022-01-10 19:25:37,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:25:37" (1/1) ... [2022-01-10 19:25:37,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:25:37,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:25:39,438 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_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-10 19:25:39,462 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_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-10 19:25:39,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:25:39,713 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:25:40,473 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_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-10 19:25:40,480 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_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-10 19:25:40,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:25:40,558 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:25:40,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40 WrapperNode [2022-01-10 19:25:40,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:25:40,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:25:40,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:25:40,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:25:40,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:40,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,096 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 57, calls inlined = 144, statements flattened = 14324 [2022-01-10 19:25:41,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:25:41,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:25:41,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:25:41,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:25:41,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:25:41,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:25:41,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:25:41,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:25:41,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (1/1) ... [2022-01-10 19:25:41,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:25:41,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:25:41,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:25:41,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:25:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:25:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:25:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:25:41,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:25:41,826 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:25:41,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:25:50,798 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:25:50,830 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:25:50,830 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 19:25:50,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:25:50 BoogieIcfgContainer [2022-01-10 19:25:50,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:25:50,836 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:25:50,836 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:25:50,837 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:25:50,840 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:25:50" (1/1) ... [2022-01-10 19:25:52,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:25:52 BasicIcfg [2022-01-10 19:25:52,446 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:25:52,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:25:52,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:25:52,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:25:52,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:25:37" (1/4) ... [2022-01-10 19:25:52,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d281fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:25:52, skipping insertion in model container [2022-01-10 19:25:52,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:25:40" (2/4) ... [2022-01-10 19:25:52,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d281fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:25:52, skipping insertion in model container [2022-01-10 19:25:52,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:25:50" (3/4) ... [2022-01-10 19:25:52,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d281fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:25:52, skipping insertion in model container [2022-01-10 19:25:52,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:25:52" (4/4) ... [2022-01-10 19:25:52,455 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-1.cTransformedIcfg [2022-01-10 19:25:52,460 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:25:52,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:25:52,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:25:52,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:25:52,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:25:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:52,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:52,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:52,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1298378125, now seen corresponding path program 1 times [2022-01-10 19:25:52,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:52,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128291082] [2022-01-10 19:25:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:52,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:52,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:52,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128291082] [2022-01-10 19:25:52,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128291082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:52,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:52,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:52,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678172527] [2022-01-10 19:25:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:52,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:52,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:53,016 INFO L87 Difference]: Start difference. First operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 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 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:53,380 INFO L93 Difference]: Finished difference Result 6700 states and 11699 transitions. [2022-01-10 19:25:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:53,416 INFO L225 Difference]: With dead ends: 6700 [2022-01-10 19:25:53,416 INFO L226 Difference]: Without dead ends: 3624 [2022-01-10 19:25:53,429 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 [2022-01-10 19:25:53,435 INFO L933 BasicCegarLoop]: 5262 mSDtfsCounter, 5166 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:53,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 6336 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-01-10 19:25:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2022-01-10 19:25:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7096685082872929) internal successors, (6189), 3621 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6189 transitions. [2022-01-10 19:25:53,627 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6189 transitions. Word has length 110 [2022-01-10 19:25:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:53,627 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6189 transitions. [2022-01-10 19:25:53,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6189 transitions. [2022-01-10 19:25:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:53,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:53,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:53,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:25:53,630 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1120812461, now seen corresponding path program 1 times [2022-01-10 19:25:53,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:53,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033126026] [2022-01-10 19:25:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:53,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:53,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:53,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033126026] [2022-01-10 19:25:53,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033126026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:53,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:53,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:53,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228718690] [2022-01-10 19:25:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:53,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:53,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:53,716 INFO L87 Difference]: Start difference. First operand 3622 states and 6189 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:53,820 INFO L93 Difference]: Finished difference Result 5108 states and 8396 transitions. [2022-01-10 19:25:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:53,838 INFO L225 Difference]: With dead ends: 5108 [2022-01-10 19:25:53,839 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:53,845 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 [2022-01-10 19:25:53,847 INFO L933 BasicCegarLoop]: 5189 mSDtfsCounter, 5179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5179 SdHoareTripleChecker+Valid, 5189 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 [2022-01-10 19:25:53,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5179 Valid, 5189 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:53,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7074585635359116) internal successors, (6181), 3621 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6181 transitions. [2022-01-10 19:25:53,955 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6181 transitions. Word has length 110 [2022-01-10 19:25:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:53,955 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6181 transitions. [2022-01-10 19:25:53,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6181 transitions. [2022-01-10 19:25:53,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:53,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:53,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:53,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:25:53,969 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:53,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1796505070, now seen corresponding path program 1 times [2022-01-10 19:25:53,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:53,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140512201] [2022-01-10 19:25:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:53,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:54,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:54,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140512201] [2022-01-10 19:25:54,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140512201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:54,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:54,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:54,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898480336] [2022-01-10 19:25:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:54,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:54,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:54,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:54,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:54,038 INFO L87 Difference]: Start difference. First operand 3622 states and 6181 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:54,126 INFO L93 Difference]: Finished difference Result 5107 states and 8379 transitions. [2022-01-10 19:25:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:54,142 INFO L225 Difference]: With dead ends: 5107 [2022-01-10 19:25:54,142 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:54,152 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 [2022-01-10 19:25:54,156 INFO L933 BasicCegarLoop]: 5184 mSDtfsCounter, 5173 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5173 SdHoareTripleChecker+Valid, 5184 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 [2022-01-10 19:25:54,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5173 Valid, 5184 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7052486187845304) internal successors, (6173), 3621 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6173 transitions. [2022-01-10 19:25:54,269 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6173 transitions. Word has length 110 [2022-01-10 19:25:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:54,269 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6173 transitions. [2022-01-10 19:25:54,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6173 transitions. [2022-01-10 19:25:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:54,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:54,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:54,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:25:54,272 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:54,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1680119310, now seen corresponding path program 1 times [2022-01-10 19:25:54,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966852758] [2022-01-10 19:25:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:54,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:54,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966852758] [2022-01-10 19:25:54,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966852758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:54,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:54,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:54,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506231945] [2022-01-10 19:25:54,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:54,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:54,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:54,358 INFO L87 Difference]: Start difference. First operand 3622 states and 6173 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:54,448 INFO L93 Difference]: Finished difference Result 5105 states and 8360 transitions. [2022-01-10 19:25:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:54,463 INFO L225 Difference]: With dead ends: 5105 [2022-01-10 19:25:54,463 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:54,468 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 [2022-01-10 19:25:54,474 INFO L933 BasicCegarLoop]: 5179 mSDtfsCounter, 5166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 5179 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 [2022-01-10 19:25:54,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 5179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:54,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7030386740331491) internal successors, (6165), 3621 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6165 transitions. [2022-01-10 19:25:54,577 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6165 transitions. Word has length 110 [2022-01-10 19:25:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:54,578 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6165 transitions. [2022-01-10 19:25:54,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6165 transitions. [2022-01-10 19:25:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:54,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:54,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:54,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:25:54,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1667484114, now seen corresponding path program 1 times [2022-01-10 19:25:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720330112] [2022-01-10 19:25:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:54,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:54,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720330112] [2022-01-10 19:25:54,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720330112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:54,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:54,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:54,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315003309] [2022-01-10 19:25:54,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:54,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:54,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:54,766 INFO L87 Difference]: Start difference. First operand 3622 states and 6165 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:54,879 INFO L93 Difference]: Finished difference Result 5104 states and 8343 transitions. [2022-01-10 19:25:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:54,893 INFO L225 Difference]: With dead ends: 5104 [2022-01-10 19:25:54,893 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:54,898 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 [2022-01-10 19:25:54,899 INFO L933 BasicCegarLoop]: 5174 mSDtfsCounter, 5160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5160 SdHoareTripleChecker+Valid, 5174 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 [2022-01-10 19:25:54,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5160 Valid, 5174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7008287292817679) internal successors, (6157), 3621 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6157 transitions. [2022-01-10 19:25:55,037 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6157 transitions. Word has length 110 [2022-01-10 19:25:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:55,038 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6157 transitions. [2022-01-10 19:25:55,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6157 transitions. [2022-01-10 19:25:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:55,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:55,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:55,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:25:55,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:55,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1688211982, now seen corresponding path program 1 times [2022-01-10 19:25:55,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:55,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550533179] [2022-01-10 19:25:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:55,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:55,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:55,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550533179] [2022-01-10 19:25:55,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550533179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:55,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:55,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:55,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586706392] [2022-01-10 19:25:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:55,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:55,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:55,106 INFO L87 Difference]: Start difference. First operand 3622 states and 6157 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:55,210 INFO L93 Difference]: Finished difference Result 5103 states and 8326 transitions. [2022-01-10 19:25:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:55,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:55,225 INFO L225 Difference]: With dead ends: 5103 [2022-01-10 19:25:55,225 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:55,229 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 [2022-01-10 19:25:55,231 INFO L933 BasicCegarLoop]: 5169 mSDtfsCounter, 5154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 5169 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 [2022-01-10 19:25:55,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 5169 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6986187845303868) internal successors, (6149), 3621 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6149 transitions. [2022-01-10 19:25:55,350 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6149 transitions. Word has length 110 [2022-01-10 19:25:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:55,350 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6149 transitions. [2022-01-10 19:25:55,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6149 transitions. [2022-01-10 19:25:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:55,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:55,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:55,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:25:55,353 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 549534254, now seen corresponding path program 1 times [2022-01-10 19:25:55,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:55,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746586483] [2022-01-10 19:25:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:55,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:55,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:55,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746586483] [2022-01-10 19:25:55,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746586483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:55,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:55,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:55,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299063245] [2022-01-10 19:25:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:55,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:55,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:55,416 INFO L87 Difference]: Start difference. First operand 3622 states and 6149 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:55,557 INFO L93 Difference]: Finished difference Result 5101 states and 8307 transitions. [2022-01-10 19:25:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:55,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:55,583 INFO L225 Difference]: With dead ends: 5101 [2022-01-10 19:25:55,583 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:55,587 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 [2022-01-10 19:25:55,588 INFO L933 BasicCegarLoop]: 5144 mSDtfsCounter, 5055 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:55,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 5222 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6914364640883979) internal successors, (6123), 3621 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6123 transitions. [2022-01-10 19:25:55,717 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6123 transitions. Word has length 110 [2022-01-10 19:25:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:55,718 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6123 transitions. [2022-01-10 19:25:55,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6123 transitions. [2022-01-10 19:25:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:55,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:55,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:55,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:25:55,720 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 108621773, now seen corresponding path program 1 times [2022-01-10 19:25:55,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:55,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052713576] [2022-01-10 19:25:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:55,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:55,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:55,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052713576] [2022-01-10 19:25:55,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052713576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:55,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:55,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:55,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075033947] [2022-01-10 19:25:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:55,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:55,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:55,786 INFO L87 Difference]: Start difference. First operand 3622 states and 6123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:55,917 INFO L93 Difference]: Finished difference Result 5100 states and 8254 transitions. [2022-01-10 19:25:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:55,929 INFO L225 Difference]: With dead ends: 5100 [2022-01-10 19:25:55,929 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:55,933 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 [2022-01-10 19:25:55,934 INFO L933 BasicCegarLoop]: 5129 mSDtfsCounter, 5040 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:55,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 5206 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:56,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.684254143646409) internal successors, (6097), 3621 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6097 transitions. [2022-01-10 19:25:56,165 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6097 transitions. Word has length 110 [2022-01-10 19:25:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:56,165 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6097 transitions. [2022-01-10 19:25:56,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6097 transitions. [2022-01-10 19:25:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:56,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:56,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:56,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:25:56,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash -953709460, now seen corresponding path program 1 times [2022-01-10 19:25:56,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:56,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037391014] [2022-01-10 19:25:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:56,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:56,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037391014] [2022-01-10 19:25:56,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037391014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:56,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:56,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:56,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249079667] [2022-01-10 19:25:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:56,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:56,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:56,213 INFO L87 Difference]: Start difference. First operand 3622 states and 6097 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:56,345 INFO L93 Difference]: Finished difference Result 5099 states and 8201 transitions. [2022-01-10 19:25:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:56,355 INFO L225 Difference]: With dead ends: 5099 [2022-01-10 19:25:56,355 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:56,359 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 [2022-01-10 19:25:56,361 INFO L933 BasicCegarLoop]: 5114 mSDtfsCounter, 5025 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 5190 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:56,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5025 Valid, 5190 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.67707182320442) internal successors, (6071), 3621 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6071 transitions. [2022-01-10 19:25:56,477 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6071 transitions. Word has length 110 [2022-01-10 19:25:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:56,478 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6071 transitions. [2022-01-10 19:25:56,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6071 transitions. [2022-01-10 19:25:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:56,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:56,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:56,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:25:56,482 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -914206581, now seen corresponding path program 1 times [2022-01-10 19:25:56,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:56,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998761816] [2022-01-10 19:25:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:56,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:56,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:56,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998761816] [2022-01-10 19:25:56,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998761816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:56,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:56,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:56,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904591231] [2022-01-10 19:25:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:56,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:56,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:56,527 INFO L87 Difference]: Start difference. First operand 3622 states and 6071 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:56,652 INFO L93 Difference]: Finished difference Result 5098 states and 8148 transitions. [2022-01-10 19:25:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:56,660 INFO L225 Difference]: With dead ends: 5098 [2022-01-10 19:25:56,660 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:56,663 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 [2022-01-10 19:25:56,664 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5010 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:56,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 5174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:56,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.669889502762431) internal successors, (6045), 3621 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6045 transitions. [2022-01-10 19:25:56,789 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6045 transitions. Word has length 110 [2022-01-10 19:25:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:56,789 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6045 transitions. [2022-01-10 19:25:56,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6045 transitions. [2022-01-10 19:25:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:56,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:56,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:56,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:25:56,791 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 797821866, now seen corresponding path program 1 times [2022-01-10 19:25:56,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005689320] [2022-01-10 19:25:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:56,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:56,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005689320] [2022-01-10 19:25:56,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005689320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:56,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:56,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:56,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724995416] [2022-01-10 19:25:56,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:56,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:56,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:56,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:56,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:56,834 INFO L87 Difference]: Start difference. First operand 3622 states and 6045 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:56,973 INFO L93 Difference]: Finished difference Result 5097 states and 8095 transitions. [2022-01-10 19:25:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:56,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:56,984 INFO L225 Difference]: With dead ends: 5097 [2022-01-10 19:25:56,984 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:56,988 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 [2022-01-10 19:25:56,989 INFO L933 BasicCegarLoop]: 5084 mSDtfsCounter, 4995 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4995 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:56,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4995 Valid, 5158 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.662707182320442) internal successors, (6019), 3621 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6019 transitions. [2022-01-10 19:25:57,120 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6019 transitions. Word has length 110 [2022-01-10 19:25:57,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:57,120 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6019 transitions. [2022-01-10 19:25:57,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6019 transitions. [2022-01-10 19:25:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:57,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:57,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:57,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:25:57,123 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1564287415, now seen corresponding path program 1 times [2022-01-10 19:25:57,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:57,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92809416] [2022-01-10 19:25:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:57,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:57,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92809416] [2022-01-10 19:25:57,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92809416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:57,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:57,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:57,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301938663] [2022-01-10 19:25:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:57,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:57,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:57,180 INFO L87 Difference]: Start difference. First operand 3622 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:57,337 INFO L93 Difference]: Finished difference Result 5096 states and 8042 transitions. [2022-01-10 19:25:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:57,345 INFO L225 Difference]: With dead ends: 5096 [2022-01-10 19:25:57,345 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:57,348 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 [2022-01-10 19:25:57,349 INFO L933 BasicCegarLoop]: 5069 mSDtfsCounter, 4980 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:57,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 5142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.655524861878453) internal successors, (5993), 3621 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5993 transitions. [2022-01-10 19:25:57,465 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5993 transitions. Word has length 110 [2022-01-10 19:25:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:57,465 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5993 transitions. [2022-01-10 19:25:57,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5993 transitions. [2022-01-10 19:25:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:57,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:57,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:57,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:25:57,467 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2115012632, now seen corresponding path program 1 times [2022-01-10 19:25:57,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:57,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460127249] [2022-01-10 19:25:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:57,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:57,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:57,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460127249] [2022-01-10 19:25:57,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460127249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:57,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:57,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:57,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209776549] [2022-01-10 19:25:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:57,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:57,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:57,502 INFO L87 Difference]: Start difference. First operand 3622 states and 5993 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:57,633 INFO L93 Difference]: Finished difference Result 5095 states and 7989 transitions. [2022-01-10 19:25:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:57,643 INFO L225 Difference]: With dead ends: 5095 [2022-01-10 19:25:57,643 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:57,648 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 [2022-01-10 19:25:57,649 INFO L933 BasicCegarLoop]: 5054 mSDtfsCounter, 4965 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:57,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 5126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.648342541436464) internal successors, (5967), 3621 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5967 transitions. [2022-01-10 19:25:57,781 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5967 transitions. Word has length 110 [2022-01-10 19:25:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:57,781 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5967 transitions. [2022-01-10 19:25:57,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5967 transitions. [2022-01-10 19:25:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:57,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:57,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:57,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:25:57,784 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash -178874105, now seen corresponding path program 1 times [2022-01-10 19:25:57,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136188788] [2022-01-10 19:25:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:57,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:57,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:57,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136188788] [2022-01-10 19:25:57,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136188788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:57,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:57,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585913207] [2022-01-10 19:25:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:57,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:57,821 INFO L87 Difference]: Start difference. First operand 3622 states and 5967 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:57,949 INFO L93 Difference]: Finished difference Result 5094 states and 7936 transitions. [2022-01-10 19:25:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:25:57,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:57,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:57,957 INFO L225 Difference]: With dead ends: 5094 [2022-01-10 19:25:57,957 INFO L226 Difference]: Without dead ends: 3622 [2022-01-10 19:25:57,961 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 [2022-01-10 19:25:57,962 INFO L933 BasicCegarLoop]: 5039 mSDtfsCounter, 4950 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4950 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:57,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4950 Valid, 5110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:25:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-10 19:25:58,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-10 19:25:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6411602209944751) internal successors, (5941), 3621 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5941 transitions. [2022-01-10 19:25:58,092 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5941 transitions. Word has length 110 [2022-01-10 19:25:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:58,092 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5941 transitions. [2022-01-10 19:25:58,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5941 transitions. [2022-01-10 19:25:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:58,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:58,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:58,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:25:58,094 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1282928346, now seen corresponding path program 1 times [2022-01-10 19:25:58,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:58,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308607728] [2022-01-10 19:25:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:58,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:58,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308607728] [2022-01-10 19:25:58,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308607728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:58,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:58,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:58,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023273180] [2022-01-10 19:25:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:58,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:58,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:58,158 INFO L87 Difference]: Start difference. First operand 3622 states and 5941 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:58,492 INFO L93 Difference]: Finished difference Result 5776 states and 8827 transitions. [2022-01-10 19:25:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:58,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:58,502 INFO L225 Difference]: With dead ends: 5776 [2022-01-10 19:25:58,502 INFO L226 Difference]: Without dead ends: 4318 [2022-01-10 19:25:58,506 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 [2022-01-10 19:25:58,506 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 2950 mSDsluCounter, 13365 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 18493 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:58,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 18493 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:25:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2022-01-10 19:25:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 3628. [2022-01-10 19:25:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3626 states have (on average 1.635135135135135) internal successors, (5929), 3627 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5929 transitions. [2022-01-10 19:25:58,665 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5929 transitions. Word has length 110 [2022-01-10 19:25:58,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:58,665 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 5929 transitions. [2022-01-10 19:25:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5929 transitions. [2022-01-10 19:25:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:58,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:58,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:58,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:25:58,667 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:58,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1529241433, now seen corresponding path program 1 times [2022-01-10 19:25:58,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:58,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630804205] [2022-01-10 19:25:58,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:58,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:58,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630804205] [2022-01-10 19:25:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630804205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:58,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:58,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:58,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675264395] [2022-01-10 19:25:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:58,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:58,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:58,726 INFO L87 Difference]: Start difference. First operand 3628 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:59,065 INFO L93 Difference]: Finished difference Result 6245 states and 9385 transitions. [2022-01-10 19:25:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:59,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:59,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:59,075 INFO L225 Difference]: With dead ends: 6245 [2022-01-10 19:25:59,076 INFO L226 Difference]: Without dead ends: 4816 [2022-01-10 19:25:59,080 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 [2022-01-10 19:25:59,080 INFO L933 BasicCegarLoop]: 5026 mSDtfsCounter, 2342 mSDsluCounter, 14517 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 19543 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:59,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 19543 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:25:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2022-01-10 19:25:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 3634. [2022-01-10 19:25:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3632 states have (on average 1.6291299559471366) internal successors, (5917), 3633 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5917 transitions. [2022-01-10 19:25:59,253 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5917 transitions. Word has length 110 [2022-01-10 19:25:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:59,253 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 5917 transitions. [2022-01-10 19:25:59,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5917 transitions. [2022-01-10 19:25:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:59,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:59,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:59,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:25:59,255 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1843042280, now seen corresponding path program 1 times [2022-01-10 19:25:59,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:59,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649363600] [2022-01-10 19:25:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:59,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:59,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:59,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649363600] [2022-01-10 19:25:59,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649363600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:59,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:59,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:25:59,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634024947] [2022-01-10 19:25:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:59,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:25:59,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:25:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:25:59,315 INFO L87 Difference]: Start difference. First operand 3634 states and 5917 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:25:59,698 INFO L93 Difference]: Finished difference Result 6354 states and 9471 transitions. [2022-01-10 19:25:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 19:25:59,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 110 [2022-01-10 19:25:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:25:59,709 INFO L225 Difference]: With dead ends: 6354 [2022-01-10 19:25:59,709 INFO L226 Difference]: Without dead ends: 4926 [2022-01-10 19:25:59,713 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 [2022-01-10 19:25:59,713 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 2206 mSDsluCounter, 14726 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 19724 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:25:59,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 19724 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 19:25:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2022-01-10 19:25:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 3640. [2022-01-10 19:25:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6231445849367785) internal successors, (5905), 3639 states have internal predecessors, (5905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5905 transitions. [2022-01-10 19:25:59,933 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5905 transitions. Word has length 110 [2022-01-10 19:25:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:25:59,934 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5905 transitions. [2022-01-10 19:25:59,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:25:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5905 transitions. [2022-01-10 19:25:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:25:59,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:25:59,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:25:59,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:25:59,935 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:25:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:25:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash -340634647, now seen corresponding path program 1 times [2022-01-10 19:25:59,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:25:59,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713890298] [2022-01-10 19:25:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:25:59,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:25:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:25:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:25:59,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:25:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713890298] [2022-01-10 19:25:59,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713890298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:25:59,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:25:59,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:25:59,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852323195] [2022-01-10 19:25:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:25:59,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:25:59,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:25:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:25:59,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:25:59,987 INFO L87 Difference]: Start difference. First operand 3640 states and 5905 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:00,139 INFO L93 Difference]: Finished difference Result 5142 states and 7826 transitions. [2022-01-10 19:26:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:00,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:26:00,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:00,147 INFO L225 Difference]: With dead ends: 5142 [2022-01-10 19:26:00,148 INFO L226 Difference]: Without dead ends: 3640 [2022-01-10 19:26:00,151 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 [2022-01-10 19:26:00,151 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 4937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 5014 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 [2022-01-10 19:26:00,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4937 Valid, 5014 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-10 19:26:00,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-10 19:26:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.620945574491479) internal successors, (5897), 3639 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5897 transitions. [2022-01-10 19:26:00,312 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5897 transitions. Word has length 110 [2022-01-10 19:26:00,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:00,312 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5897 transitions. [2022-01-10 19:26:00,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5897 transitions. [2022-01-10 19:26:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:26:00,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:00,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:00,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:26:00,314 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:00,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash -595371192, now seen corresponding path program 1 times [2022-01-10 19:26:00,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:00,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249398532] [2022-01-10 19:26:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:00,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:00,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249398532] [2022-01-10 19:26:00,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249398532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:00,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:00,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:26:00,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218000678] [2022-01-10 19:26:00,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:00,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:00,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:00,384 INFO L87 Difference]: Start difference. First operand 3640 states and 5897 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:00,536 INFO L93 Difference]: Finished difference Result 5138 states and 7806 transitions. [2022-01-10 19:26:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:00,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:26:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:00,544 INFO L225 Difference]: With dead ends: 5138 [2022-01-10 19:26:00,544 INFO L226 Difference]: Without dead ends: 3640 [2022-01-10 19:26:00,547 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 [2022-01-10 19:26:00,547 INFO L933 BasicCegarLoop]: 5009 mSDtfsCounter, 4928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 5009 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 [2022-01-10 19:26:00,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4928 Valid, 5009 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-10 19:26:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-10 19:26:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6187465640461791) internal successors, (5889), 3639 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5889 transitions. [2022-01-10 19:26:00,714 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5889 transitions. Word has length 110 [2022-01-10 19:26:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:00,714 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5889 transitions. [2022-01-10 19:26:00,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5889 transitions. [2022-01-10 19:26:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 19:26:00,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:00,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:00,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:26:00,716 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:00,717 INFO L85 PathProgramCache]: Analyzing trace with hash -662377945, now seen corresponding path program 1 times [2022-01-10 19:26:00,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:00,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201658521] [2022-01-10 19:26:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:00,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:00,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201658521] [2022-01-10 19:26:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201658521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:00,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:00,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:26:00,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799683040] [2022-01-10 19:26:00,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:00,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:00,770 INFO L87 Difference]: Start difference. First operand 3640 states and 5889 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:01,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:01,095 INFO L93 Difference]: Finished difference Result 6516 states and 9554 transitions. [2022-01-10 19:26:01,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2022-01-10 19:26:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:01,106 INFO L225 Difference]: With dead ends: 6516 [2022-01-10 19:26:01,106 INFO L226 Difference]: Without dead ends: 5028 [2022-01-10 19:26:01,111 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 [2022-01-10 19:26:01,112 INFO L933 BasicCegarLoop]: 5000 mSDtfsCounter, 4877 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:26:01,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4877 Valid, 5907 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-01-10 19:26:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4912. [2022-01-10 19:26:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4910 states have (on average 1.5268839103869654) internal successors, (7497), 4911 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 7497 transitions. [2022-01-10 19:26:01,438 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 7497 transitions. Word has length 110 [2022-01-10 19:26:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:01,439 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 7497 transitions. [2022-01-10 19:26:01,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 7497 transitions. [2022-01-10 19:26:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:26:01,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:01,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:01,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:26:01,443 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1294335533, now seen corresponding path program 1 times [2022-01-10 19:26:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:01,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488074805] [2022-01-10 19:26:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:01,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:01,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488074805] [2022-01-10 19:26:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488074805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:01,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:01,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:01,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353635845] [2022-01-10 19:26:01,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:01,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:01,529 INFO L87 Difference]: Start difference. First operand 4912 states and 7497 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:02,054 INFO L93 Difference]: Finished difference Result 10274 states and 14311 transitions. [2022-01-10 19:26:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:02,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 178 [2022-01-10 19:26:02,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:02,070 INFO L225 Difference]: With dead ends: 10274 [2022-01-10 19:26:02,070 INFO L226 Difference]: Without dead ends: 7520 [2022-01-10 19:26:02,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:02,077 INFO L933 BasicCegarLoop]: 4997 mSDtfsCounter, 4895 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 5904 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:26:02,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 5904 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2022-01-10 19:26:02,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7318. [2022-01-10 19:26:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7316 states have (on average 1.4402679059595407) internal successors, (10537), 7317 states have internal predecessors, (10537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10537 transitions. [2022-01-10 19:26:02,638 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10537 transitions. Word has length 178 [2022-01-10 19:26:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:02,639 INFO L470 AbstractCegarLoop]: Abstraction has 7318 states and 10537 transitions. [2022-01-10 19:26:02,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:02,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10537 transitions. [2022-01-10 19:26:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:26:02,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:02,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:02,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:26:02,645 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:02,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2045259373, now seen corresponding path program 1 times [2022-01-10 19:26:02,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:02,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130618397] [2022-01-10 19:26:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:02,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:02,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:02,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130618397] [2022-01-10 19:26:02,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130618397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:02,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:02,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:02,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322461648] [2022-01-10 19:26:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:02,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:02,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:02,750 INFO L87 Difference]: Start difference. First operand 7318 states and 10537 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:03,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:03,593 INFO L93 Difference]: Finished difference Result 17195 states and 22939 transitions. [2022-01-10 19:26:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:03,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 178 [2022-01-10 19:26:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:03,619 INFO L225 Difference]: With dead ends: 17195 [2022-01-10 19:26:03,620 INFO L226 Difference]: Without dead ends: 12099 [2022-01-10 19:26:03,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:03,632 INFO L933 BasicCegarLoop]: 5526 mSDtfsCounter, 4734 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4734 SdHoareTripleChecker+Valid, 6558 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 [2022-01-10 19:26:03,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4734 Valid, 6558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2022-01-10 19:26:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 12097. [2022-01-10 19:26:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12097 states, 12095 states have (on average 1.3598181066556427) internal successors, (16447), 12096 states have internal predecessors, (16447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12097 states to 12097 states and 16447 transitions. [2022-01-10 19:26:04,337 INFO L78 Accepts]: Start accepts. Automaton has 12097 states and 16447 transitions. Word has length 178 [2022-01-10 19:26:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:04,338 INFO L470 AbstractCegarLoop]: Abstraction has 12097 states and 16447 transitions. [2022-01-10 19:26:04,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 12097 states and 16447 transitions. [2022-01-10 19:26:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:26:04,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:04,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:04,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:26:04,348 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029068, now seen corresponding path program 1 times [2022-01-10 19:26:04,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:04,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246836080] [2022-01-10 19:26:04,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:04,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:26:04,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:04,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246836080] [2022-01-10 19:26:04,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246836080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:04,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:04,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:04,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212609827] [2022-01-10 19:26:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:04,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:04,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:04,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:04,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:04,390 INFO L87 Difference]: Start difference. First operand 12097 states and 16447 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:05,040 INFO L93 Difference]: Finished difference Result 21877 states and 28704 transitions. [2022-01-10 19:26:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 178 [2022-01-10 19:26:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:05,068 INFO L225 Difference]: With dead ends: 21877 [2022-01-10 19:26:05,069 INFO L226 Difference]: Without dead ends: 12002 [2022-01-10 19:26:05,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:05,087 INFO L933 BasicCegarLoop]: 5008 mSDtfsCounter, 1046 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 8966 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 [2022-01-10 19:26:05,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 8966 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2022-01-10 19:26:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2022-01-10 19:26:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 12000 states have (on average 1.3611666666666666) internal successors, (16334), 12001 states have internal predecessors, (16334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 16334 transitions. [2022-01-10 19:26:05,778 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 16334 transitions. Word has length 178 [2022-01-10 19:26:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:05,778 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 16334 transitions. [2022-01-10 19:26:05,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 16334 transitions. [2022-01-10 19:26:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 19:26:05,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:05,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:05,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:26:05,787 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -788170566, now seen corresponding path program 1 times [2022-01-10 19:26:05,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:05,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80038863] [2022-01-10 19:26:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:05,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:05,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80038863] [2022-01-10 19:26:05,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80038863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:05,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:05,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:05,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590646406] [2022-01-10 19:26:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:05,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:05,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:05,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:05,855 INFO L87 Difference]: Start difference. First operand 12002 states and 16334 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:07,090 INFO L93 Difference]: Finished difference Result 31152 states and 40222 transitions. [2022-01-10 19:26:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:07,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 179 [2022-01-10 19:26:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:07,135 INFO L225 Difference]: With dead ends: 31152 [2022-01-10 19:26:07,135 INFO L226 Difference]: Without dead ends: 21372 [2022-01-10 19:26:07,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:07,156 INFO L933 BasicCegarLoop]: 5240 mSDtfsCounter, 4893 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6260 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 [2022-01-10 19:26:07,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6260 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21372 states. [2022-01-10 19:26:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21372 to 20746. [2022-01-10 19:26:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20746 states, 20744 states have (on average 1.309101426918627) internal successors, (27156), 20745 states have internal predecessors, (27156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20746 states to 20746 states and 27156 transitions. [2022-01-10 19:26:08,364 INFO L78 Accepts]: Start accepts. Automaton has 20746 states and 27156 transitions. Word has length 179 [2022-01-10 19:26:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:08,364 INFO L470 AbstractCegarLoop]: Abstraction has 20746 states and 27156 transitions. [2022-01-10 19:26:08,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 20746 states and 27156 transitions. [2022-01-10 19:26:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 19:26:08,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:08,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:08,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:26:08,377 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash -889981673, now seen corresponding path program 1 times [2022-01-10 19:26:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362127627] [2022-01-10 19:26:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:08,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:26:08,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:08,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362127627] [2022-01-10 19:26:08,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362127627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:08,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:08,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:08,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624346913] [2022-01-10 19:26:08,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:08,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:08,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:08,412 INFO L87 Difference]: Start difference. First operand 20746 states and 27156 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:09,457 INFO L93 Difference]: Finished difference Result 39229 states and 50186 transitions. [2022-01-10 19:26:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:09,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 179 [2022-01-10 19:26:09,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:09,495 INFO L225 Difference]: With dead ends: 39229 [2022-01-10 19:26:09,495 INFO L226 Difference]: Without dead ends: 20652 [2022-01-10 19:26:09,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:09,526 INFO L933 BasicCegarLoop]: 5007 mSDtfsCounter, 1044 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 8965 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 [2022-01-10 19:26:09,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 8965 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20652 states. [2022-01-10 19:26:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20652 to 20652. [2022-01-10 19:26:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20652 states, 20650 states have (on average 1.309685230024213) internal successors, (27045), 20651 states have internal predecessors, (27045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20652 states to 20652 states and 27045 transitions. [2022-01-10 19:26:11,005 INFO L78 Accepts]: Start accepts. Automaton has 20652 states and 27045 transitions. Word has length 179 [2022-01-10 19:26:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:11,006 INFO L470 AbstractCegarLoop]: Abstraction has 20652 states and 27045 transitions. [2022-01-10 19:26:11,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 20652 states and 27045 transitions. [2022-01-10 19:26:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 19:26:11,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:11,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:11,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 19:26:11,017 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash 546157628, now seen corresponding path program 1 times [2022-01-10 19:26:11,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:11,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651704148] [2022-01-10 19:26:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:11,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:11,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:11,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651704148] [2022-01-10 19:26:11,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651704148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:11,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:11,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:11,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339700575] [2022-01-10 19:26:11,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:11,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:11,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:11,079 INFO L87 Difference]: Start difference. First operand 20652 states and 27045 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:13,180 INFO L93 Difference]: Finished difference Result 56517 states and 71619 transitions. [2022-01-10 19:26:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:13,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2022-01-10 19:26:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:13,232 INFO L225 Difference]: With dead ends: 56517 [2022-01-10 19:26:13,232 INFO L226 Difference]: Without dead ends: 38087 [2022-01-10 19:26:13,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:13,249 INFO L933 BasicCegarLoop]: 5287 mSDtfsCounter, 4893 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6305 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 [2022-01-10 19:26:13,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6305 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38087 states. [2022-01-10 19:26:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38087 to 37061. [2022-01-10 19:26:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37061 states, 37059 states have (on average 1.2775574084567851) internal successors, (47345), 37060 states have internal predecessors, (47345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37061 states to 37061 states and 47345 transitions. [2022-01-10 19:26:15,426 INFO L78 Accepts]: Start accepts. Automaton has 37061 states and 47345 transitions. Word has length 180 [2022-01-10 19:26:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:15,426 INFO L470 AbstractCegarLoop]: Abstraction has 37061 states and 47345 transitions. [2022-01-10 19:26:15,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 37061 states and 47345 transitions. [2022-01-10 19:26:15,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 19:26:15,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:15,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:15,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 19:26:15,448 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1784398813, now seen corresponding path program 1 times [2022-01-10 19:26:15,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:15,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156660584] [2022-01-10 19:26:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:15,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:26:15,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156660584] [2022-01-10 19:26:15,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156660584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:15,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:15,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:15,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558729103] [2022-01-10 19:26:15,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:15,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:15,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:15,486 INFO L87 Difference]: Start difference. First operand 37061 states and 47345 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:17,921 INFO L93 Difference]: Finished difference Result 71853 states and 90558 transitions. [2022-01-10 19:26:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 180 [2022-01-10 19:26:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:17,981 INFO L225 Difference]: With dead ends: 71853 [2022-01-10 19:26:17,981 INFO L226 Difference]: Without dead ends: 36968 [2022-01-10 19:26:18,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:18,020 INFO L933 BasicCegarLoop]: 5006 mSDtfsCounter, 1042 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 8964 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 [2022-01-10 19:26:18,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 8964 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36968 states. [2022-01-10 19:26:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36968 to 36968. [2022-01-10 19:26:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36968 states, 36966 states have (on average 1.2778228642536384) internal successors, (47236), 36967 states have internal predecessors, (47236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:20,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36968 states to 36968 states and 47236 transitions. [2022-01-10 19:26:20,235 INFO L78 Accepts]: Start accepts. Automaton has 36968 states and 47236 transitions. Word has length 180 [2022-01-10 19:26:20,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:20,235 INFO L470 AbstractCegarLoop]: Abstraction has 36968 states and 47236 transitions. [2022-01-10 19:26:20,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36968 states and 47236 transitions. [2022-01-10 19:26:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 19:26:20,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:20,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:20,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 19:26:20,251 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1584495378, now seen corresponding path program 1 times [2022-01-10 19:26:20,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:20,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621249039] [2022-01-10 19:26:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:20,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:26:20,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:20,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621249039] [2022-01-10 19:26:20,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621249039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:20,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:20,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:20,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944230885] [2022-01-10 19:26:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:20,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:20,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:20,325 INFO L87 Difference]: Start difference. First operand 36968 states and 47236 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:26:24,480 INFO L93 Difference]: Finished difference Result 104048 states and 130384 transitions. [2022-01-10 19:26:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:26:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2022-01-10 19:26:24,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:26:24,583 INFO L225 Difference]: With dead ends: 104048 [2022-01-10 19:26:24,584 INFO L226 Difference]: Without dead ends: 69302 [2022-01-10 19:26:24,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:24,618 INFO L933 BasicCegarLoop]: 5271 mSDtfsCounter, 4893 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6287 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 [2022-01-10 19:26:24,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6287 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:26:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69302 states. [2022-01-10 19:26:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69302 to 67700. [2022-01-10 19:26:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67700 states, 67698 states have (on average 1.2587373334515053) internal successors, (85214), 67699 states have internal predecessors, (85214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67700 states to 67700 states and 85214 transitions. [2022-01-10 19:26:29,074 INFO L78 Accepts]: Start accepts. Automaton has 67700 states and 85214 transitions. Word has length 181 [2022-01-10 19:26:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:26:29,075 INFO L470 AbstractCegarLoop]: Abstraction has 67700 states and 85214 transitions. [2022-01-10 19:26:29,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:26:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 67700 states and 85214 transitions. [2022-01-10 19:26:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-10 19:26:29,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:26:29,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:26:29,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 19:26:29,103 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:26:29,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:26:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2123826891, now seen corresponding path program 1 times [2022-01-10 19:26:29,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:26:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318372587] [2022-01-10 19:26:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:26:29,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:26:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:26:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 19:26:29,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:26:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318372587] [2022-01-10 19:26:29,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318372587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:26:29,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:26:29,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:26:29,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450276587] [2022-01-10 19:26:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:26:29,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:26:29,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:26:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:26:29,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:26:29,148 INFO L87 Difference]: Start difference. First operand 67700 states and 85214 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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)