/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_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:15:05,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:15:05,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:15:05,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:15:05,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:15:05,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:15:05,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:15:05,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:15:05,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:15:05,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:15:05,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:15:05,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:15:05,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:15:05,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:15:05,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:15:05,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:15:05,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:15:05,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:15:05,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:15:05,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:15:05,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 14:15:05,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:15:05,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:15:05,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:15:05,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:15:05,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:15:05,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:15:05,412 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:15:05,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:15:05,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:15:05,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:15:05,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:15:05,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:15:05,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:15:05,415 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:15:05,419 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:15:05,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:15:05,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:15:05,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:15:05,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:15:05,622 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:15:05,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2022-01-10 14:15:05,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f057377f9/fcc95929d31c42e58bb80b1aae7bc546/FLAG0ddbf6b39 [2022-01-10 14:15:06,018 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:15:06,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2022-01-10 14:15:06,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f057377f9/fcc95929d31c42e58bb80b1aae7bc546/FLAG0ddbf6b39 [2022-01-10 14:15:06,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f057377f9/fcc95929d31c42e58bb80b1aae7bc546 [2022-01-10 14:15:06,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:15:06,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:15:06,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:15:06,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:15:06,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:15:06,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:06,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ace3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06, skipping insertion in model container [2022-01-10 14:15:06,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:06,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:15:06,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:15:06,622 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/pc_sfifo_3.cil+token_ring.10.cil-1.c[911,924] [2022-01-10 14:15:06,695 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/pc_sfifo_3.cil+token_ring.10.cil-1.c[8416,8429] [2022-01-10 14:15:06,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:15:06,796 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:15:06,805 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/pc_sfifo_3.cil+token_ring.10.cil-1.c[911,924] [2022-01-10 14:15:06,827 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/pc_sfifo_3.cil+token_ring.10.cil-1.c[8416,8429] [2022-01-10 14:15:06,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:15:06,904 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:15:06,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06 WrapperNode [2022-01-10 14:15:06,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:15:06,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:15:06,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:15:06,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:15:06,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:06,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,016 INFO L137 Inliner]: procedures = 76, calls = 92, calls flagged for inlining = 87, calls inlined = 243, statements flattened = 3602 [2022-01-10 14:15:07,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:15:07,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:15:07,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:15:07,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:15:07,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:15:07,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:15:07,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:15:07,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:15:07,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (1/1) ... [2022-01-10 14:15:07,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:15:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:15:07,144 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 14:15:07,146 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 14:15:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:15:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:15:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:15:07,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:15:07,256 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:15:07,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:15:08,711 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume !(1bv32 == ~q_free~0); [2022-01-10 14:15:08,712 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 14:15:08,712 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:15:08,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:15:08,724 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 14:15:08,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:15:08 BoogieIcfgContainer [2022-01-10 14:15:08,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:15:08,727 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:15:08,727 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:15:08,728 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:15:08,730 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:15:08" (1/1) ... [2022-01-10 14:15:09,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:15:09 BasicIcfg [2022-01-10 14:15:09,040 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:15:09,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:15:09,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:15:09,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:15:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:15:06" (1/4) ... [2022-01-10 14:15:09,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d102cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:15:09, skipping insertion in model container [2022-01-10 14:15:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:15:06" (2/4) ... [2022-01-10 14:15:09,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d102cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:15:09, skipping insertion in model container [2022-01-10 14:15:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:15:08" (3/4) ... [2022-01-10 14:15:09,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d102cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:15:09, skipping insertion in model container [2022-01-10 14:15:09,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:15:09" (4/4) ... [2022-01-10 14:15:09,046 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-1.cTransformedIcfg [2022-01-10 14:15:09,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:15:09,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 14:15:09,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:15:09,100 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 14:15:09,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 14:15:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 1518 states, 1513 states have (on average 1.5155320555188367) internal successors, (2293), 1517 states have internal predecessors, (2293), 0 states have call successors, (0), 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 14:15:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:15:09,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:09,140 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] [2022-01-10 14:15:09,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1417247082, now seen corresponding path program 1 times [2022-01-10 14:15:09,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:09,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073945732] [2022-01-10 14:15:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:09,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:15:09,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:09,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073945732] [2022-01-10 14:15:09,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073945732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:09,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:09,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:09,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247733478] [2022-01-10 14:15:09,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:09,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:09,490 INFO L87 Difference]: Start difference. First operand has 1518 states, 1513 states have (on average 1.5155320555188367) internal successors, (2293), 1517 states have internal predecessors, (2293), 0 states have call successors, (0), 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 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:15:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:09,638 INFO L93 Difference]: Finished difference Result 3019 states and 4550 transitions. [2022-01-10 14:15:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:15:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:09,653 INFO L225 Difference]: With dead ends: 3019 [2022-01-10 14:15:09,653 INFO L226 Difference]: Without dead ends: 1640 [2022-01-10 14:15:09,658 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 14:15:09,660 INFO L933 BasicCegarLoop]: 2245 mSDtfsCounter, 185 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:09,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 4458 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-01-10 14:15:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1636. [2022-01-10 14:15:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1632 states have (on average 1.4865196078431373) internal successors, (2426), 1635 states have internal predecessors, (2426), 0 states have call successors, (0), 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 14:15:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2426 transitions. [2022-01-10 14:15:09,773 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2426 transitions. Word has length 44 [2022-01-10 14:15:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:09,773 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 2426 transitions. [2022-01-10 14:15:09,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:15:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2426 transitions. [2022-01-10 14:15:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:15:09,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:09,775 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] [2022-01-10 14:15:09,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:15:09,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 80429718, now seen corresponding path program 1 times [2022-01-10 14:15:09,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:09,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133470451] [2022-01-10 14:15:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:09,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:09,826 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 14:15:09,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:09,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133470451] [2022-01-10 14:15:09,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133470451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:09,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:09,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:09,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731038118] [2022-01-10 14:15:09,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:09,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:09,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:09,829 INFO L87 Difference]: Start difference. First operand 1636 states and 2426 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:15:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:09,906 INFO L93 Difference]: Finished difference Result 2054 states and 3031 transitions. [2022-01-10 14:15:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 14:15:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:09,915 INFO L225 Difference]: With dead ends: 2054 [2022-01-10 14:15:09,915 INFO L226 Difference]: Without dead ends: 1814 [2022-01-10 14:15:09,917 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 14:15:09,918 INFO L933 BasicCegarLoop]: 2230 mSDtfsCounter, 2204 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:09,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2204 Valid, 2365 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-01-10 14:15:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1806. [2022-01-10 14:15:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1802 states have (on average 1.47669256381798) internal successors, (2661), 1805 states have internal predecessors, (2661), 0 states have call successors, (0), 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 14:15:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2661 transitions. [2022-01-10 14:15:09,959 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2661 transitions. Word has length 44 [2022-01-10 14:15:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:09,960 INFO L470 AbstractCegarLoop]: Abstraction has 1806 states and 2661 transitions. [2022-01-10 14:15:09,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 14:15:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2661 transitions. [2022-01-10 14:15:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:15:09,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:09,973 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] [2022-01-10 14:15:09,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:15:09,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1863174452, now seen corresponding path program 1 times [2022-01-10 14:15:09,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:09,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59219722] [2022-01-10 14:15:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:09,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:10,014 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 14:15:10,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:10,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59219722] [2022-01-10 14:15:10,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59219722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:10,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:10,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:10,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584956206] [2022-01-10 14:15:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:10,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:10,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:10,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:10,016 INFO L87 Difference]: Start difference. First operand 1806 states and 2661 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 14:15:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:10,078 INFO L93 Difference]: Finished difference Result 2528 states and 3695 transitions. [2022-01-10 14:15:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 14:15:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:10,084 INFO L225 Difference]: With dead ends: 2528 [2022-01-10 14:15:10,084 INFO L226 Difference]: Without dead ends: 2132 [2022-01-10 14:15:10,085 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 14:15:10,086 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 2188 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:10,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2188 Valid, 2362 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-01-10 14:15:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2124. [2022-01-10 14:15:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2120 states have (on average 1.459433962264151) internal successors, (3094), 2123 states have internal predecessors, (3094), 0 states have call successors, (0), 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 14:15:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3094 transitions. [2022-01-10 14:15:10,184 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3094 transitions. Word has length 45 [2022-01-10 14:15:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:10,184 INFO L470 AbstractCegarLoop]: Abstraction has 2124 states and 3094 transitions. [2022-01-10 14:15:10,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 14:15:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3094 transitions. [2022-01-10 14:15:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 14:15:10,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:10,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:15:10,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:15:10,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash 842975358, now seen corresponding path program 1 times [2022-01-10 14:15:10,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:10,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161530401] [2022-01-10 14:15:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:10,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 14:15:10,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:10,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161530401] [2022-01-10 14:15:10,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161530401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:10,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:10,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:10,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979315765] [2022-01-10 14:15:10,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:10,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:10,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:10,268 INFO L87 Difference]: Start difference. First operand 2124 states and 3094 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:15:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:10,353 INFO L93 Difference]: Finished difference Result 3492 states and 4996 transitions. [2022-01-10 14:15:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:10,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 59 [2022-01-10 14:15:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:10,362 INFO L225 Difference]: With dead ends: 3492 [2022-01-10 14:15:10,362 INFO L226 Difference]: Without dead ends: 2796 [2022-01-10 14:15:10,364 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 14:15:10,371 INFO L933 BasicCegarLoop]: 2227 mSDtfsCounter, 2183 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:10,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2183 Valid, 2392 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2022-01-10 14:15:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2792. [2022-01-10 14:15:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2788 states have (on average 1.4275466284074605) internal successors, (3980), 2791 states have internal predecessors, (3980), 0 states have call successors, (0), 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 14:15:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 3980 transitions. [2022-01-10 14:15:10,451 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 3980 transitions. Word has length 59 [2022-01-10 14:15:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:10,452 INFO L470 AbstractCegarLoop]: Abstraction has 2792 states and 3980 transitions. [2022-01-10 14:15:10,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:15:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 3980 transitions. [2022-01-10 14:15:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 14:15:10,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:10,454 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:15:10,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:15:10,455 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1744412484, now seen corresponding path program 1 times [2022-01-10 14:15:10,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:10,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225601509] [2022-01-10 14:15:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:10,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:15:10,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:10,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225601509] [2022-01-10 14:15:10,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225601509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:10,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:10,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:10,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309829485] [2022-01-10 14:15:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:10,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:10,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:10,533 INFO L87 Difference]: Start difference. First operand 2792 states and 3980 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 14:15:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:10,682 INFO L93 Difference]: Finished difference Result 5416 states and 7562 transitions. [2022-01-10 14:15:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:10,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 14:15:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:10,696 INFO L225 Difference]: With dead ends: 5416 [2022-01-10 14:15:10,696 INFO L226 Difference]: Without dead ends: 4096 [2022-01-10 14:15:10,701 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 14:15:10,703 INFO L933 BasicCegarLoop]: 2378 mSDtfsCounter, 146 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 4592 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2022-01-10 14:15:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 4096. [2022-01-10 14:15:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4092 states have (on average 1.3949169110459434) internal successors, (5708), 4095 states have internal predecessors, (5708), 0 states have call successors, (0), 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 14:15:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 5708 transitions. [2022-01-10 14:15:10,845 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 5708 transitions. Word has length 61 [2022-01-10 14:15:10,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:10,847 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 5708 transitions. [2022-01-10 14:15:10,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 14:15:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 5708 transitions. [2022-01-10 14:15:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 14:15:10,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:10,853 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-10 14:15:10,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:15:10,854 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:10,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash -52028687, now seen corresponding path program 1 times [2022-01-10 14:15:10,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:10,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454680231] [2022-01-10 14:15:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:10,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 14:15:10,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:10,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454680231] [2022-01-10 14:15:10,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454680231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:10,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:10,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:10,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466827097] [2022-01-10 14:15:10,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:10,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:10,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:10,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:10,936 INFO L87 Difference]: Start difference. First operand 4096 states and 5708 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:15:11,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:11,099 INFO L93 Difference]: Finished difference Result 9176 states and 12592 transitions. [2022-01-10 14:15:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:11,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-10 14:15:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:11,119 INFO L225 Difference]: With dead ends: 9176 [2022-01-10 14:15:11,119 INFO L226 Difference]: Without dead ends: 6636 [2022-01-10 14:15:11,124 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 14:15:11,126 INFO L933 BasicCegarLoop]: 2228 mSDtfsCounter, 131 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 4409 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:11,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 4409 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2022-01-10 14:15:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6632. [2022-01-10 14:15:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6628 states have (on average 1.3705491852745926) internal successors, (9084), 6631 states have internal predecessors, (9084), 0 states have call successors, (0), 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 14:15:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 9084 transitions. [2022-01-10 14:15:11,313 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 9084 transitions. Word has length 103 [2022-01-10 14:15:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:11,314 INFO L470 AbstractCegarLoop]: Abstraction has 6632 states and 9084 transitions. [2022-01-10 14:15:11,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:15:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 9084 transitions. [2022-01-10 14:15:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 14:15:11,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:11,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-01-10 14:15:11,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:15:11,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:11,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2075259141, now seen corresponding path program 1 times [2022-01-10 14:15:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:11,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282125251] [2022-01-10 14:15:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:11,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:15:11,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:11,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282125251] [2022-01-10 14:15:11,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282125251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:11,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:11,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:11,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791151617] [2022-01-10 14:15:11,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:11,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:11,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:11,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:11,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:11,359 INFO L87 Difference]: Start difference. First operand 6632 states and 9084 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 14:15:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:11,533 INFO L93 Difference]: Finished difference Result 9200 states and 12588 transitions. [2022-01-10 14:15:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 14:15:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:11,539 INFO L225 Difference]: With dead ends: 9200 [2022-01-10 14:15:11,539 INFO L226 Difference]: Without dead ends: 1371 [2022-01-10 14:15:11,546 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 14:15:11,547 INFO L933 BasicCegarLoop]: 2334 mSDtfsCounter, 112 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:11,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 4531 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2022-01-10 14:15:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2022-01-10 14:15:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1369 states have (on average 1.4886778670562455) internal successors, (2038), 1370 states have internal predecessors, (2038), 0 states have call successors, (0), 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 14:15:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2038 transitions. [2022-01-10 14:15:11,572 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2038 transitions. Word has length 104 [2022-01-10 14:15:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:11,573 INFO L470 AbstractCegarLoop]: Abstraction has 1371 states and 2038 transitions. [2022-01-10 14:15:11,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 14:15:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2038 transitions. [2022-01-10 14:15:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:11,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:11,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:11,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:15:11,574 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1283473490, now seen corresponding path program 1 times [2022-01-10 14:15:11,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617342202] [2022-01-10 14:15:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:11,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:11,612 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 14:15:11,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:11,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617342202] [2022-01-10 14:15:11,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617342202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:11,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:11,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:11,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446535708] [2022-01-10 14:15:11,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:11,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:11,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:11,614 INFO L87 Difference]: Start difference. First operand 1371 states and 2038 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:11,668 INFO L93 Difference]: Finished difference Result 3876 states and 5743 transitions. [2022-01-10 14:15:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:11,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:11,676 INFO L225 Difference]: With dead ends: 3876 [2022-01-10 14:15:11,676 INFO L226 Difference]: Without dead ends: 2523 [2022-01-10 14:15:11,679 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 14:15:11,679 INFO L933 BasicCegarLoop]: 2032 mSDtfsCounter, 1903 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 3835 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 14:15:11,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 3835 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2022-01-10 14:15:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2519. [2022-01-10 14:15:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4815256257449345) internal successors, (3729), 2518 states have internal predecessors, (3729), 0 states have call successors, (0), 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 14:15:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3729 transitions. [2022-01-10 14:15:11,738 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3729 transitions. Word has length 143 [2022-01-10 14:15:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:11,738 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3729 transitions. [2022-01-10 14:15:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3729 transitions. [2022-01-10 14:15:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:11,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:11,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:11,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:15:11,740 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1168536882, now seen corresponding path program 1 times [2022-01-10 14:15:11,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:11,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908759334] [2022-01-10 14:15:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:11,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:11,782 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 14:15:11,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:11,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908759334] [2022-01-10 14:15:11,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908759334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:11,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:11,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:11,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752183505] [2022-01-10 14:15:11,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:11,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:11,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:11,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:11,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:11,784 INFO L87 Difference]: Start difference. First operand 2519 states and 3729 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:11,837 INFO L93 Difference]: Finished difference Result 5019 states and 7427 transitions. [2022-01-10 14:15:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:11,858 INFO L225 Difference]: With dead ends: 5019 [2022-01-10 14:15:11,858 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:11,863 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 14:15:11,863 INFO L933 BasicCegarLoop]: 2026 mSDtfsCounter, 2013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 2026 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 14:15:11,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 2026 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:11,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.478347238776321) internal successors, (3721), 2518 states have internal predecessors, (3721), 0 states have call successors, (0), 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 14:15:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3721 transitions. [2022-01-10 14:15:11,915 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3721 transitions. Word has length 143 [2022-01-10 14:15:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:11,915 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3721 transitions. [2022-01-10 14:15:11,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3721 transitions. [2022-01-10 14:15:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:11,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:11,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:11,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 14:15:11,917 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1719018578, now seen corresponding path program 1 times [2022-01-10 14:15:11,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:11,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935676620] [2022-01-10 14:15:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:11,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:11,951 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 14:15:11,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:11,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935676620] [2022-01-10 14:15:11,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935676620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:11,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:11,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:11,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625492402] [2022-01-10 14:15:11,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:11,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:11,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:11,953 INFO L87 Difference]: Start difference. First operand 2519 states and 3721 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,004 INFO L93 Difference]: Finished difference Result 5018 states and 7410 transitions. [2022-01-10 14:15:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,009 INFO L225 Difference]: With dead ends: 5018 [2022-01-10 14:15:12,009 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,012 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 14:15:12,012 INFO L933 BasicCegarLoop]: 2021 mSDtfsCounter, 2007 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2021 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 14:15:12,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 2021 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4751688518077075) internal successors, (3713), 2518 states have internal predecessors, (3713), 0 states have call successors, (0), 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 14:15:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3713 transitions. [2022-01-10 14:15:12,063 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3713 transitions. Word has length 143 [2022-01-10 14:15:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,063 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3713 transitions. [2022-01-10 14:15:12,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3713 transitions. [2022-01-10 14:15:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 14:15:12,065 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash 479981262, now seen corresponding path program 1 times [2022-01-10 14:15:12,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613884347] [2022-01-10 14:15:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,097 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 14:15:12,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613884347] [2022-01-10 14:15:12,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613884347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300520457] [2022-01-10 14:15:12,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,099 INFO L87 Difference]: Start difference. First operand 2519 states and 3713 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,178 INFO L93 Difference]: Finished difference Result 5017 states and 7393 transitions. [2022-01-10 14:15:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,181 INFO L225 Difference]: With dead ends: 5017 [2022-01-10 14:15:12,181 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,184 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 14:15:12,184 INFO L933 BasicCegarLoop]: 2016 mSDtfsCounter, 2001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2016 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 14:15:12,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 2016 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4719904648390942) internal successors, (3705), 2518 states have internal predecessors, (3705), 0 states have call successors, (0), 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 14:15:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3705 transitions. [2022-01-10 14:15:12,238 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3705 transitions. Word has length 143 [2022-01-10 14:15:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3705 transitions. [2022-01-10 14:15:12,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3705 transitions. [2022-01-10 14:15:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 14:15:12,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1936390062, now seen corresponding path program 1 times [2022-01-10 14:15:12,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435999209] [2022-01-10 14:15:12,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,275 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 14:15:12,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435999209] [2022-01-10 14:15:12,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435999209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678888712] [2022-01-10 14:15:12,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,277 INFO L87 Difference]: Start difference. First operand 2519 states and 3705 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,336 INFO L93 Difference]: Finished difference Result 5016 states and 7376 transitions. [2022-01-10 14:15:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,341 INFO L225 Difference]: With dead ends: 5016 [2022-01-10 14:15:12,341 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,344 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 14:15:12,345 INFO L933 BasicCegarLoop]: 2011 mSDtfsCounter, 1995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 2011 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 14:15:12,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 2011 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4688120778704807) internal successors, (3697), 2518 states have internal predecessors, (3697), 0 states have call successors, (0), 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 14:15:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3697 transitions. [2022-01-10 14:15:12,402 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3697 transitions. Word has length 143 [2022-01-10 14:15:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,403 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3697 transitions. [2022-01-10 14:15:12,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3697 transitions. [2022-01-10 14:15:12,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 14:15:12,404 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash 874992334, now seen corresponding path program 1 times [2022-01-10 14:15:12,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235844014] [2022-01-10 14:15:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,436 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 14:15:12,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235844014] [2022-01-10 14:15:12,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235844014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342042644] [2022-01-10 14:15:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,438 INFO L87 Difference]: Start difference. First operand 2519 states and 3697 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,501 INFO L93 Difference]: Finished difference Result 5015 states and 7359 transitions. [2022-01-10 14:15:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,505 INFO L225 Difference]: With dead ends: 5015 [2022-01-10 14:15:12,505 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,508 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 14:15:12,508 INFO L933 BasicCegarLoop]: 2006 mSDtfsCounter, 1989 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 2006 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 14:15:12,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 2006 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4656336909018672) internal successors, (3689), 2518 states have internal predecessors, (3689), 0 states have call successors, (0), 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 14:15:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3689 transitions. [2022-01-10 14:15:12,564 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3689 transitions. Word has length 143 [2022-01-10 14:15:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,564 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3689 transitions. [2022-01-10 14:15:12,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3689 transitions. [2022-01-10 14:15:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 14:15:12,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1256395694, now seen corresponding path program 1 times [2022-01-10 14:15:12,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870184243] [2022-01-10 14:15:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,597 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 14:15:12,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870184243] [2022-01-10 14:15:12,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870184243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812223647] [2022-01-10 14:15:12,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,599 INFO L87 Difference]: Start difference. First operand 2519 states and 3689 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,690 INFO L93 Difference]: Finished difference Result 5014 states and 7342 transitions. [2022-01-10 14:15:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,694 INFO L225 Difference]: With dead ends: 5014 [2022-01-10 14:15:12,694 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,697 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 14:15:12,697 INFO L933 BasicCegarLoop]: 2001 mSDtfsCounter, 1983 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 2001 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 14:15:12,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 2001 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.462455303933254) internal successors, (3681), 2518 states have internal predecessors, (3681), 0 states have call successors, (0), 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 14:15:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3681 transitions. [2022-01-10 14:15:12,759 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3681 transitions. Word has length 143 [2022-01-10 14:15:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,759 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3681 transitions. [2022-01-10 14:15:12,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3681 transitions. [2022-01-10 14:15:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 14:15:12,761 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1086605618, now seen corresponding path program 1 times [2022-01-10 14:15:12,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842968406] [2022-01-10 14:15:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,790 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 14:15:12,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842968406] [2022-01-10 14:15:12,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842968406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339226218] [2022-01-10 14:15:12,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,792 INFO L87 Difference]: Start difference. First operand 2519 states and 3681 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:12,864 INFO L93 Difference]: Finished difference Result 5013 states and 7325 transitions. [2022-01-10 14:15:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:12,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:12,869 INFO L225 Difference]: With dead ends: 5013 [2022-01-10 14:15:12,869 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:12,873 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 14:15:12,874 INFO L933 BasicCegarLoop]: 1996 mSDtfsCounter, 1977 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1996 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 14:15:12,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 1996 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4592769169646405) internal successors, (3673), 2518 states have internal predecessors, (3673), 0 states have call successors, (0), 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 14:15:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3673 transitions. [2022-01-10 14:15:12,944 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3673 transitions. Word has length 143 [2022-01-10 14:15:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:12,944 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3673 transitions. [2022-01-10 14:15:12,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3673 transitions. [2022-01-10 14:15:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:12,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:12,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 14:15:12,946 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1716375634, now seen corresponding path program 1 times [2022-01-10 14:15:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:12,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583114068] [2022-01-10 14:15:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:12,977 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 14:15:12,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583114068] [2022-01-10 14:15:12,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583114068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:12,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:12,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:12,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315240974] [2022-01-10 14:15:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:12,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:12,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:12,978 INFO L87 Difference]: Start difference. First operand 2519 states and 3673 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:13,051 INFO L93 Difference]: Finished difference Result 5012 states and 7308 transitions. [2022-01-10 14:15:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:13,056 INFO L225 Difference]: With dead ends: 5012 [2022-01-10 14:15:13,056 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:13,059 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 14:15:13,059 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1971 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 1991 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 14:15:13,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 1991 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.456098529996027) internal successors, (3665), 2518 states have internal predecessors, (3665), 0 states have call successors, (0), 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 14:15:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3665 transitions. [2022-01-10 14:15:13,160 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3665 transitions. Word has length 143 [2022-01-10 14:15:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3665 transitions. [2022-01-10 14:15:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3665 transitions. [2022-01-10 14:15:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:13,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:13,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:13,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 14:15:13,162 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 202971854, now seen corresponding path program 1 times [2022-01-10 14:15:13,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:13,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704724073] [2022-01-10 14:15:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:13,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:13,195 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 14:15:13,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:13,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704724073] [2022-01-10 14:15:13,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704724073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:13,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:13,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:13,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732582062] [2022-01-10 14:15:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:13,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:13,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:13,197 INFO L87 Difference]: Start difference. First operand 2519 states and 3665 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:13,298 INFO L93 Difference]: Finished difference Result 5010 states and 7289 transitions. [2022-01-10 14:15:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:13,303 INFO L225 Difference]: With dead ends: 5010 [2022-01-10 14:15:13,303 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:13,306 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 14:15:13,307 INFO L933 BasicCegarLoop]: 1986 mSDtfsCounter, 1964 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1986 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 14:15:13,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1964 Valid, 1986 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4529201430274137) internal successors, (3657), 2518 states have internal predecessors, (3657), 0 states have call successors, (0), 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 14:15:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3657 transitions. [2022-01-10 14:15:13,410 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3657 transitions. Word has length 143 [2022-01-10 14:15:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:13,410 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3657 transitions. [2022-01-10 14:15:13,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3657 transitions. [2022-01-10 14:15:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:13,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:13,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:13,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 14:15:13,411 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1149219346, now seen corresponding path program 1 times [2022-01-10 14:15:13,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097476948] [2022-01-10 14:15:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:13,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:13,442 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 14:15:13,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:13,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097476948] [2022-01-10 14:15:13,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097476948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:13,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:13,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:13,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359592713] [2022-01-10 14:15:13,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:13,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:13,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:13,443 INFO L87 Difference]: Start difference. First operand 2519 states and 3657 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:13,547 INFO L93 Difference]: Finished difference Result 5009 states and 7272 transitions. [2022-01-10 14:15:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:13,552 INFO L225 Difference]: With dead ends: 5009 [2022-01-10 14:15:13,552 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:13,556 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 14:15:13,556 INFO L933 BasicCegarLoop]: 1955 mSDtfsCounter, 1833 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:13,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2063 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.44020659515296) internal successors, (3625), 2518 states have internal predecessors, (3625), 0 states have call successors, (0), 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 14:15:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3625 transitions. [2022-01-10 14:15:13,632 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3625 transitions. Word has length 143 [2022-01-10 14:15:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:13,633 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3625 transitions. [2022-01-10 14:15:13,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3625 transitions. [2022-01-10 14:15:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:13,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:13,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:13,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 14:15:13,634 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:13,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1257828173, now seen corresponding path program 1 times [2022-01-10 14:15:13,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:13,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005354100] [2022-01-10 14:15:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:13,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:13,665 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 14:15:13,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:13,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005354100] [2022-01-10 14:15:13,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005354100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:13,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:13,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:13,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323399937] [2022-01-10 14:15:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:13,666 INFO L87 Difference]: Start difference. First operand 2519 states and 3625 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:13,760 INFO L93 Difference]: Finished difference Result 5008 states and 7207 transitions. [2022-01-10 14:15:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:13,765 INFO L225 Difference]: With dead ends: 5008 [2022-01-10 14:15:13,765 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:13,768 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 14:15:13,769 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 1815 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:13,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 2044 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4274930472785061) internal successors, (3593), 2518 states have internal predecessors, (3593), 0 states have call successors, (0), 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 14:15:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3593 transitions. [2022-01-10 14:15:13,861 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3593 transitions. Word has length 143 [2022-01-10 14:15:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:13,861 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3593 transitions. [2022-01-10 14:15:13,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3593 transitions. [2022-01-10 14:15:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:13,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:13,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:13,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 14:15:13,862 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2072849964, now seen corresponding path program 1 times [2022-01-10 14:15:13,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872658960] [2022-01-10 14:15:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:13,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:13,891 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 14:15:13,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:13,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872658960] [2022-01-10 14:15:13,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872658960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:13,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:13,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:13,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181806213] [2022-01-10 14:15:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:13,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:13,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:13,893 INFO L87 Difference]: Start difference. First operand 2519 states and 3593 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:13,986 INFO L93 Difference]: Finished difference Result 5007 states and 7142 transitions. [2022-01-10 14:15:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:13,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:13,990 INFO L225 Difference]: With dead ends: 5007 [2022-01-10 14:15:13,990 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:13,994 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 14:15:13,994 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 1797 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:13,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1797 Valid, 2025 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:14,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4147794994040523) internal successors, (3561), 2518 states have internal predecessors, (3561), 0 states have call successors, (0), 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 14:15:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3561 transitions. [2022-01-10 14:15:14,073 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3561 transitions. Word has length 143 [2022-01-10 14:15:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:14,073 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3561 transitions. [2022-01-10 14:15:14,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3561 transitions. [2022-01-10 14:15:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:14,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:14,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:14,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 14:15:14,074 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1628704267, now seen corresponding path program 1 times [2022-01-10 14:15:14,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549406117] [2022-01-10 14:15:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:14,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:14,110 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 14:15:14,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549406117] [2022-01-10 14:15:14,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549406117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:14,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:14,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:14,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624947578] [2022-01-10 14:15:14,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:14,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:14,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:14,113 INFO L87 Difference]: Start difference. First operand 2519 states and 3561 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:14,208 INFO L93 Difference]: Finished difference Result 5006 states and 7077 transitions. [2022-01-10 14:15:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:14,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:14,213 INFO L225 Difference]: With dead ends: 5006 [2022-01-10 14:15:14,213 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:14,216 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 14:15:14,217 INFO L933 BasicCegarLoop]: 1901 mSDtfsCounter, 1779 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:14,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1779 Valid, 2006 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.4020659515295988) internal successors, (3529), 2518 states have internal predecessors, (3529), 0 states have call successors, (0), 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 14:15:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3529 transitions. [2022-01-10 14:15:14,317 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3529 transitions. Word has length 143 [2022-01-10 14:15:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:14,317 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3529 transitions. [2022-01-10 14:15:14,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3529 transitions. [2022-01-10 14:15:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:14,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:14,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:14,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 14:15:14,319 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1185820373, now seen corresponding path program 1 times [2022-01-10 14:15:14,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664022744] [2022-01-10 14:15:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:14,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:14,349 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 14:15:14,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:14,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664022744] [2022-01-10 14:15:14,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664022744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:14,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:14,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:14,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316422793] [2022-01-10 14:15:14,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:14,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:14,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:14,351 INFO L87 Difference]: Start difference. First operand 2519 states and 3529 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:14,445 INFO L93 Difference]: Finished difference Result 5005 states and 7012 transitions. [2022-01-10 14:15:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:14,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:14,450 INFO L225 Difference]: With dead ends: 5005 [2022-01-10 14:15:14,450 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:14,452 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 14:15:14,453 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 1761 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:14,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 1987 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:14,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.389352403655145) internal successors, (3497), 2518 states have internal predecessors, (3497), 0 states have call successors, (0), 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 14:15:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3497 transitions. [2022-01-10 14:15:14,529 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3497 transitions. Word has length 143 [2022-01-10 14:15:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:14,529 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3497 transitions. [2022-01-10 14:15:14,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3497 transitions. [2022-01-10 14:15:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:14,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:14,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:14,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 14:15:14,530 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1206562698, now seen corresponding path program 1 times [2022-01-10 14:15:14,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:14,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553577256] [2022-01-10 14:15:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:15:14,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:14,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553577256] [2022-01-10 14:15:14,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553577256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:14,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:14,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986148237] [2022-01-10 14:15:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:14,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:14,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:14,570 INFO L87 Difference]: Start difference. First operand 2519 states and 3497 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:14,720 INFO L93 Difference]: Finished difference Result 5004 states and 6947 transitions. [2022-01-10 14:15:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:14,725 INFO L225 Difference]: With dead ends: 5004 [2022-01-10 14:15:14,725 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:14,728 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 14:15:14,729 INFO L933 BasicCegarLoop]: 1865 mSDtfsCounter, 1743 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:14,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1968 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.3766388557806912) internal successors, (3465), 2518 states have internal predecessors, (3465), 0 states have call successors, (0), 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 14:15:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3465 transitions. [2022-01-10 14:15:14,812 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3465 transitions. Word has length 143 [2022-01-10 14:15:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:14,812 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3465 transitions. [2022-01-10 14:15:14,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3465 transitions. [2022-01-10 14:15:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:14,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:14,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:14,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 14:15:14,813 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:14,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1621101417, now seen corresponding path program 1 times [2022-01-10 14:15:14,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:14,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47100803] [2022-01-10 14:15:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:14,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:14,843 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 14:15:14,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:14,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47100803] [2022-01-10 14:15:14,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47100803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:14,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:14,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:14,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257268453] [2022-01-10 14:15:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:14,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:14,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:14,845 INFO L87 Difference]: Start difference. First operand 2519 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:14,957 INFO L93 Difference]: Finished difference Result 5003 states and 6882 transitions. [2022-01-10 14:15:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:14,963 INFO L225 Difference]: With dead ends: 5003 [2022-01-10 14:15:14,963 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:14,969 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 14:15:14,969 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 1725 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:14,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 1949 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:14,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.3639253079062377) internal successors, (3433), 2518 states have internal predecessors, (3433), 0 states have call successors, (0), 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 14:15:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3433 transitions. [2022-01-10 14:15:15,056 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3433 transitions. Word has length 143 [2022-01-10 14:15:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:15,056 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3433 transitions. [2022-01-10 14:15:15,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3433 transitions. [2022-01-10 14:15:15,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:15,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:15,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:15,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 14:15:15,057 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:15,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:15,058 INFO L85 PathProgramCache]: Analyzing trace with hash -647059384, now seen corresponding path program 1 times [2022-01-10 14:15:15,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:15,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566661627] [2022-01-10 14:15:15,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:15,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:15,096 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 14:15:15,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:15,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566661627] [2022-01-10 14:15:15,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566661627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:15,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:15,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:15,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327968223] [2022-01-10 14:15:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:15,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:15,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:15,097 INFO L87 Difference]: Start difference. First operand 2519 states and 3433 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:15,208 INFO L93 Difference]: Finished difference Result 5002 states and 6817 transitions. [2022-01-10 14:15:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:15,213 INFO L225 Difference]: With dead ends: 5002 [2022-01-10 14:15:15,213 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:15,216 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 14:15:15,216 INFO L933 BasicCegarLoop]: 1829 mSDtfsCounter, 1707 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:15,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1707 Valid, 1930 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.351211760031784) internal successors, (3401), 2518 states have internal predecessors, (3401), 0 states have call successors, (0), 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 14:15:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3401 transitions. [2022-01-10 14:15:15,300 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3401 transitions. Word has length 143 [2022-01-10 14:15:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:15,300 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3401 transitions. [2022-01-10 14:15:15,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3401 transitions. [2022-01-10 14:15:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:15,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:15,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:15,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 14:15:15,301 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash 851980967, now seen corresponding path program 1 times [2022-01-10 14:15:15,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759847915] [2022-01-10 14:15:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:15,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:15,330 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 14:15:15,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:15,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759847915] [2022-01-10 14:15:15,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759847915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:15,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:15,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:15,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008353325] [2022-01-10 14:15:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:15,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:15,332 INFO L87 Difference]: Start difference. First operand 2519 states and 3401 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:15,449 INFO L93 Difference]: Finished difference Result 5001 states and 6752 transitions. [2022-01-10 14:15:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:15,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:15,453 INFO L225 Difference]: With dead ends: 5001 [2022-01-10 14:15:15,453 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:15,455 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 14:15:15,456 INFO L933 BasicCegarLoop]: 1811 mSDtfsCounter, 1689 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:15,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1689 Valid, 1911 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.3384982121573301) internal successors, (3369), 2518 states have internal predecessors, (3369), 0 states have call successors, (0), 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 14:15:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3369 transitions. [2022-01-10 14:15:15,542 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3369 transitions. Word has length 143 [2022-01-10 14:15:15,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:15,543 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3369 transitions. [2022-01-10 14:15:15,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3369 transitions. [2022-01-10 14:15:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:15,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:15,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:15,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 14:15:15,544 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1794093562, now seen corresponding path program 1 times [2022-01-10 14:15:15,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:15,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600393621] [2022-01-10 14:15:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:15,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:15,573 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 14:15:15,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:15,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600393621] [2022-01-10 14:15:15,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600393621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:15,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:15,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:15,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159447289] [2022-01-10 14:15:15,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:15,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:15,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:15,574 INFO L87 Difference]: Start difference. First operand 2519 states and 3369 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:15,680 INFO L93 Difference]: Finished difference Result 5000 states and 6687 transitions. [2022-01-10 14:15:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:15,684 INFO L225 Difference]: With dead ends: 5000 [2022-01-10 14:15:15,684 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:15,688 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 14:15:15,688 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 1671 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:15,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 1892 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.3257846642828763) internal successors, (3337), 2518 states have internal predecessors, (3337), 0 states have call successors, (0), 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 14:15:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3337 transitions. [2022-01-10 14:15:15,821 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3337 transitions. Word has length 143 [2022-01-10 14:15:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:15,821 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3337 transitions. [2022-01-10 14:15:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3337 transitions. [2022-01-10 14:15:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:15,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:15,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:15,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 14:15:15,823 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -968505627, now seen corresponding path program 1 times [2022-01-10 14:15:15,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:15,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023172141] [2022-01-10 14:15:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:15,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:15:15,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:15,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023172141] [2022-01-10 14:15:15,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023172141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:15,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:15,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:15,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806455843] [2022-01-10 14:15:15,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:15,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:15,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:15,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:15,870 INFO L87 Difference]: Start difference. First operand 2519 states and 3337 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:16,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:16,014 INFO L93 Difference]: Finished difference Result 4999 states and 6622 transitions. [2022-01-10 14:15:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:16,018 INFO L225 Difference]: With dead ends: 4999 [2022-01-10 14:15:16,018 INFO L226 Difference]: Without dead ends: 2519 [2022-01-10 14:15:16,020 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 14:15:16,020 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 1653 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:16,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 1873 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2022-01-10 14:15:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 2519. [2022-01-10 14:15:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2517 states have (on average 1.3130711164084228) internal successors, (3305), 2518 states have internal predecessors, (3305), 0 states have call successors, (0), 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 14:15:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3305 transitions. [2022-01-10 14:15:16,113 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3305 transitions. Word has length 143 [2022-01-10 14:15:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:16,113 INFO L470 AbstractCegarLoop]: Abstraction has 2519 states and 3305 transitions. [2022-01-10 14:15:16,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:16,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3305 transitions. [2022-01-10 14:15:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:16,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:16,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:16,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 14:15:16,114 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1620369212, now seen corresponding path program 1 times [2022-01-10 14:15:16,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270614086] [2022-01-10 14:15:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:16,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:16,175 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 14:15:16,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270614086] [2022-01-10 14:15:16,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270614086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:16,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:16,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:15:16,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542552362] [2022-01-10 14:15:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:16,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:15:16,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:15:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:15:16,176 INFO L87 Difference]: Start difference. First operand 2519 states and 3305 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:16,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:16,435 INFO L93 Difference]: Finished difference Result 5826 states and 7716 transitions. [2022-01-10 14:15:16,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:15:16,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:16,440 INFO L225 Difference]: With dead ends: 5826 [2022-01-10 14:15:16,440 INFO L226 Difference]: Without dead ends: 3353 [2022-01-10 14:15:16,443 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 14:15:16,447 INFO L933 BasicCegarLoop]: 1925 mSDtfsCounter, 5115 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 3635 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:16,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5115 Valid, 3635 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-01-10 14:15:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2525. [2022-01-10 14:15:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2523 states have (on average 1.3028141101862862) internal successors, (3287), 2524 states have internal predecessors, (3287), 0 states have call successors, (0), 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 14:15:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3287 transitions. [2022-01-10 14:15:16,595 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3287 transitions. Word has length 143 [2022-01-10 14:15:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:16,595 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3287 transitions. [2022-01-10 14:15:16,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3287 transitions. [2022-01-10 14:15:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:16,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:16,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:16,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 14:15:16,596 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1104848763, now seen corresponding path program 1 times [2022-01-10 14:15:16,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:16,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610652444] [2022-01-10 14:15:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:16,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:16,638 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 14:15:16,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610652444] [2022-01-10 14:15:16,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610652444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:16,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:16,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:15:16,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870824227] [2022-01-10 14:15:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:16,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:15:16,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:15:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:15:16,640 INFO L87 Difference]: Start difference. First operand 2525 states and 3287 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:16,902 INFO L93 Difference]: Finished difference Result 6110 states and 8011 transitions. [2022-01-10 14:15:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:15:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:16,907 INFO L225 Difference]: With dead ends: 6110 [2022-01-10 14:15:16,907 INFO L226 Difference]: Without dead ends: 3645 [2022-01-10 14:15:16,909 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 14:15:16,910 INFO L933 BasicCegarLoop]: 1876 mSDtfsCounter, 4801 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:16,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4801 Valid, 4209 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2022-01-10 14:15:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 2531. [2022-01-10 14:15:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2529 states have (on average 1.2926057730328193) internal successors, (3269), 2530 states have internal predecessors, (3269), 0 states have call successors, (0), 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 14:15:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3269 transitions. [2022-01-10 14:15:17,044 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3269 transitions. Word has length 143 [2022-01-10 14:15:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:17,044 INFO L470 AbstractCegarLoop]: Abstraction has 2531 states and 3269 transitions. [2022-01-10 14:15:17,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3269 transitions. [2022-01-10 14:15:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:17,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:17,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:17,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 14:15:17,047 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash 749496774, now seen corresponding path program 1 times [2022-01-10 14:15:17,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:17,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176543025] [2022-01-10 14:15:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:17,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:17,089 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 14:15:17,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:17,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176543025] [2022-01-10 14:15:17,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176543025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:17,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:15:17,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840614759] [2022-01-10 14:15:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:17,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:15:17,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:15:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:15:17,091 INFO L87 Difference]: Start difference. First operand 2531 states and 3269 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:17,395 INFO L93 Difference]: Finished difference Result 6261 states and 8133 transitions. [2022-01-10 14:15:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:15:17,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:17,399 INFO L225 Difference]: With dead ends: 6261 [2022-01-10 14:15:17,399 INFO L226 Difference]: Without dead ends: 3797 [2022-01-10 14:15:17,401 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 14:15:17,402 INFO L933 BasicCegarLoop]: 1845 mSDtfsCounter, 4632 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4632 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:17,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4632 Valid, 4459 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-01-10 14:15:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2537. [2022-01-10 14:15:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2535 states have (on average 1.2824457593688363) internal successors, (3251), 2536 states have internal predecessors, (3251), 0 states have call successors, (0), 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 14:15:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3251 transitions. [2022-01-10 14:15:17,543 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3251 transitions. Word has length 143 [2022-01-10 14:15:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:17,544 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3251 transitions. [2022-01-10 14:15:17,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3251 transitions. [2022-01-10 14:15:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:17,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:17,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:17,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 14:15:17,545 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 220577735, now seen corresponding path program 1 times [2022-01-10 14:15:17,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899113411] [2022-01-10 14:15:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:17,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:17,586 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 14:15:17,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:17,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899113411] [2022-01-10 14:15:17,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899113411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:17,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:17,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:17,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032632271] [2022-01-10 14:15:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:17,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:17,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:17,587 INFO L87 Difference]: Start difference. First operand 2537 states and 3251 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:17,734 INFO L93 Difference]: Finished difference Result 5047 states and 6463 transitions. [2022-01-10 14:15:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:17,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:17,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:17,738 INFO L225 Difference]: With dead ends: 5047 [2022-01-10 14:15:17,738 INFO L226 Difference]: Without dead ends: 2537 [2022-01-10 14:15:17,742 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 14:15:17,742 INFO L933 BasicCegarLoop]: 1744 mSDtfsCounter, 1634 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1744 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 14:15:17,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1634 Valid, 1744 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-01-10 14:15:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2022-01-10 14:15:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2535 states have (on average 1.2792899408284024) internal successors, (3243), 2536 states have internal predecessors, (3243), 0 states have call successors, (0), 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 14:15:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3243 transitions. [2022-01-10 14:15:17,927 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3243 transitions. Word has length 143 [2022-01-10 14:15:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:17,927 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3243 transitions. [2022-01-10 14:15:17,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3243 transitions. [2022-01-10 14:15:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 14:15:17,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:17,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:17,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 14:15:17,929 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -34158810, now seen corresponding path program 1 times [2022-01-10 14:15:17,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:17,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814422345] [2022-01-10 14:15:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:17,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:17,973 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 14:15:17,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:17,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814422345] [2022-01-10 14:15:17,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814422345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:17,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:17,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:15:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552544266] [2022-01-10 14:15:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:17,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:17,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:17,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:17,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:17,974 INFO L87 Difference]: Start difference. First operand 2537 states and 3243 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:18,275 INFO L93 Difference]: Finished difference Result 7378 states and 9438 transitions. [2022-01-10 14:15:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 14:15:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:18,280 INFO L225 Difference]: With dead ends: 7378 [2022-01-10 14:15:18,280 INFO L226 Difference]: Without dead ends: 4882 [2022-01-10 14:15:18,283 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 14:15:18,283 INFO L933 BasicCegarLoop]: 1732 mSDtfsCounter, 1561 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:18,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 3280 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2022-01-10 14:15:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 4730. [2022-01-10 14:15:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4728 states have (on average 1.2753807106598984) internal successors, (6030), 4729 states have internal predecessors, (6030), 0 states have call successors, (0), 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 14:15:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6030 transitions. [2022-01-10 14:15:18,660 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6030 transitions. Word has length 143 [2022-01-10 14:15:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:18,660 INFO L470 AbstractCegarLoop]: Abstraction has 4730 states and 6030 transitions. [2022-01-10 14:15:18,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 14:15:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6030 transitions. [2022-01-10 14:15:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 14:15:18,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:18,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:18,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 14:15:18,667 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash 834930162, now seen corresponding path program 1 times [2022-01-10 14:15:18,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:18,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666846909] [2022-01-10 14:15:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:18,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:18,731 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 14:15:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666846909] [2022-01-10 14:15:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666846909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:18,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831592925] [2022-01-10 14:15:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:18,733 INFO L87 Difference]: Start difference. First operand 4730 states and 6030 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:19,325 INFO L93 Difference]: Finished difference Result 13917 states and 17768 transitions. [2022-01-10 14:15:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 14:15:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:19,334 INFO L225 Difference]: With dead ends: 13917 [2022-01-10 14:15:19,335 INFO L226 Difference]: Without dead ends: 9234 [2022-01-10 14:15:19,338 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 14:15:19,338 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1602 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:19,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3277 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9234 states. [2022-01-10 14:15:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9234 to 8934. [2022-01-10 14:15:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8934 states, 8932 states have (on average 1.2733990147783252) internal successors, (11374), 8933 states have internal predecessors, (11374), 0 states have call successors, (0), 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 14:15:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8934 states to 8934 states and 11374 transitions. [2022-01-10 14:15:19,874 INFO L78 Accepts]: Start accepts. Automaton has 8934 states and 11374 transitions. Word has length 232 [2022-01-10 14:15:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:19,875 INFO L470 AbstractCegarLoop]: Abstraction has 8934 states and 11374 transitions. [2022-01-10 14:15:19,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 8934 states and 11374 transitions. [2022-01-10 14:15:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 14:15:19,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:19,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:19,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 14:15:19,879 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash -927262765, now seen corresponding path program 1 times [2022-01-10 14:15:19,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:19,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493969259] [2022-01-10 14:15:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:19,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:19,941 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 14:15:19,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493969259] [2022-01-10 14:15:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493969259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:19,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:19,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:15:19,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823515683] [2022-01-10 14:15:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:19,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:15:19,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:15:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:15:19,943 INFO L87 Difference]: Start difference. First operand 8934 states and 11374 transitions. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:21,006 INFO L93 Difference]: Finished difference Result 24992 states and 31970 transitions. [2022-01-10 14:15:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:15:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 14:15:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:21,029 INFO L225 Difference]: With dead ends: 24992 [2022-01-10 14:15:21,029 INFO L226 Difference]: Without dead ends: 16158 [2022-01-10 14:15:21,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 14:15:21,039 INFO L933 BasicCegarLoop]: 1733 mSDtfsCounter, 3870 mSDsluCounter, 4147 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3870 SdHoareTripleChecker+Valid, 5880 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:21,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3870 Valid, 5880 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:15:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16158 states. [2022-01-10 14:15:21,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16158 to 8958. [2022-01-10 14:15:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8958 states, 8956 states have (on average 1.2631755247878518) internal successors, (11313), 8957 states have internal predecessors, (11313), 0 states have call successors, (0), 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 14:15:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8958 states to 8958 states and 11313 transitions. [2022-01-10 14:15:21,803 INFO L78 Accepts]: Start accepts. Automaton has 8958 states and 11313 transitions. Word has length 232 [2022-01-10 14:15:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:21,804 INFO L470 AbstractCegarLoop]: Abstraction has 8958 states and 11313 transitions. [2022-01-10 14:15:21,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8958 states and 11313 transitions. [2022-01-10 14:15:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 14:15:21,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:21,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:21,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 14:15:21,808 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:21,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1236637231, now seen corresponding path program 1 times [2022-01-10 14:15:21,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:21,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990445903] [2022-01-10 14:15:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:21,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:21,857 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 14:15:21,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990445903] [2022-01-10 14:15:21,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990445903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:21,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:21,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:21,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941353223] [2022-01-10 14:15:21,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:21,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:21,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:21,859 INFO L87 Difference]: Start difference. First operand 8958 states and 11313 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:22,942 INFO L93 Difference]: Finished difference Result 26431 states and 33221 transitions. [2022-01-10 14:15:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 14:15:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:22,966 INFO L225 Difference]: With dead ends: 26431 [2022-01-10 14:15:22,966 INFO L226 Difference]: Without dead ends: 17611 [2022-01-10 14:15:22,977 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 14:15:22,977 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 1577 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:22,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1577 Valid, 3708 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17611 states. [2022-01-10 14:15:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17611 to 17327. [2022-01-10 14:15:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17325 states have (on average 1.252005772005772) internal successors, (21691), 17326 states have internal predecessors, (21691), 0 states have call successors, (0), 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 14:15:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 21691 transitions. [2022-01-10 14:15:24,152 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 21691 transitions. Word has length 232 [2022-01-10 14:15:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:24,153 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 21691 transitions. [2022-01-10 14:15:24,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 14:15:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 21691 transitions. [2022-01-10 14:15:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 14:15:24,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:24,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:24,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 14:15:24,159 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2036417938, now seen corresponding path program 1 times [2022-01-10 14:15:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:24,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099979545] [2022-01-10 14:15:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:24,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:24,189 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 14:15:24,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099979545] [2022-01-10 14:15:24,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099979545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:24,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:24,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122526985] [2022-01-10 14:15:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:24,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:24,191 INFO L87 Difference]: Start difference. First operand 17327 states and 21691 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 14:15:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:25,451 INFO L93 Difference]: Finished difference Result 34472 states and 43163 transitions. [2022-01-10 14:15:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 232 [2022-01-10 14:15:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:25,472 INFO L225 Difference]: With dead ends: 34472 [2022-01-10 14:15:25,472 INFO L226 Difference]: Without dead ends: 17196 [2022-01-10 14:15:25,487 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 14:15:25,488 INFO L933 BasicCegarLoop]: 1730 mSDtfsCounter, 1725 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1725 SdHoareTripleChecker+Valid, 1731 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 14:15:25,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1725 Valid, 1731 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17196 states. [2022-01-10 14:15:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17196 to 17196. [2022-01-10 14:15:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17196 states, 17194 states have (on average 1.2524136326625568) internal successors, (21534), 17195 states have internal predecessors, (21534), 0 states have call successors, (0), 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 14:15:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17196 states to 17196 states and 21534 transitions. [2022-01-10 14:15:26,681 INFO L78 Accepts]: Start accepts. Automaton has 17196 states and 21534 transitions. Word has length 232 [2022-01-10 14:15:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:26,681 INFO L470 AbstractCegarLoop]: Abstraction has 17196 states and 21534 transitions. [2022-01-10 14:15:26,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 14:15:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 17196 states and 21534 transitions. [2022-01-10 14:15:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 14:15:26,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:26,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:26,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 14:15:26,689 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1164276998, now seen corresponding path program 1 times [2022-01-10 14:15:26,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:26,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037229131] [2022-01-10 14:15:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:26,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:26,749 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 14:15:26,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:26,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037229131] [2022-01-10 14:15:26,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037229131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:26,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:26,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:26,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92318043] [2022-01-10 14:15:26,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:26,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:26,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:26,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:26,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:26,751 INFO L87 Difference]: Start difference. First operand 17196 states and 21534 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 14:15:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:28,829 INFO L93 Difference]: Finished difference Result 49858 states and 62300 transitions. [2022-01-10 14:15:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-01-10 14:15:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:28,869 INFO L225 Difference]: With dead ends: 49858 [2022-01-10 14:15:28,870 INFO L226 Difference]: Without dead ends: 32800 [2022-01-10 14:15:28,887 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 14:15:28,888 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 1361 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 4375 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 14:15:28,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1361 Valid, 4375 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32800 states. [2022-01-10 14:15:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32800 to 32796. [2022-01-10 14:15:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32796 states, 32794 states have (on average 1.2468134414831982) internal successors, (40888), 32795 states have internal predecessors, (40888), 0 states have call successors, (0), 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 14:15:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 40888 transitions. [2022-01-10 14:15:31,290 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 40888 transitions. Word has length 233 [2022-01-10 14:15:31,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:31,290 INFO L470 AbstractCegarLoop]: Abstraction has 32796 states and 40888 transitions. [2022-01-10 14:15:31,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 14:15:31,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 40888 transitions. [2022-01-10 14:15:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 14:15:31,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:31,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:31,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 14:15:31,303 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1609814309, now seen corresponding path program 1 times [2022-01-10 14:15:31,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:31,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57510752] [2022-01-10 14:15:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:31,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:31,335 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 14:15:31,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57510752] [2022-01-10 14:15:31,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57510752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:31,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936040795] [2022-01-10 14:15:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:31,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:31,337 INFO L87 Difference]: Start difference. First operand 32796 states and 40888 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 14:15:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:33,755 INFO L93 Difference]: Finished difference Result 65324 states and 81458 transitions. [2022-01-10 14:15:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:33,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 233 [2022-01-10 14:15:33,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:33,794 INFO L225 Difference]: With dead ends: 65324 [2022-01-10 14:15:33,794 INFO L226 Difference]: Without dead ends: 32666 [2022-01-10 14:15:33,814 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 14:15:33,814 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1723 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 1730 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 14:15:33,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 1730 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32666 states. [2022-01-10 14:15:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32666 to 32666. [2022-01-10 14:15:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32666 states, 32664 states have (on average 1.2470303698261083) internal successors, (40733), 32665 states have internal predecessors, (40733), 0 states have call successors, (0), 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 14:15:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32666 states to 32666 states and 40733 transitions. [2022-01-10 14:15:36,283 INFO L78 Accepts]: Start accepts. Automaton has 32666 states and 40733 transitions. Word has length 233 [2022-01-10 14:15:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:36,284 INFO L470 AbstractCegarLoop]: Abstraction has 32666 states and 40733 transitions. [2022-01-10 14:15:36,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 14:15:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 32666 states and 40733 transitions. [2022-01-10 14:15:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 14:15:36,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:36,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:36,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-10 14:15:36,295 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 237476830, now seen corresponding path program 1 times [2022-01-10 14:15:36,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:36,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574077440] [2022-01-10 14:15:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:36,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:36,349 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 14:15:36,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574077440] [2022-01-10 14:15:36,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574077440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:36,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:36,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:36,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129378111] [2022-01-10 14:15:36,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:36,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:36,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:36,351 INFO L87 Difference]: Start difference. First operand 32666 states and 40733 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 14:15:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:40,800 INFO L93 Difference]: Finished difference Result 94995 states and 118329 transitions. [2022-01-10 14:15:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2022-01-10 14:15:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:40,888 INFO L225 Difference]: With dead ends: 94995 [2022-01-10 14:15:40,889 INFO L226 Difference]: Without dead ends: 62467 [2022-01-10 14:15:40,914 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 14:15:40,915 INFO L933 BasicCegarLoop]: 2635 mSDtfsCounter, 1366 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:15:40,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 4342 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62467 states. [2022-01-10 14:15:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62467 to 62463. [2022-01-10 14:15:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62463 states, 62461 states have (on average 1.2439922511647268) internal successors, (77701), 62462 states have internal predecessors, (77701), 0 states have call successors, (0), 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 14:15:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62463 states to 62463 states and 77701 transitions. [2022-01-10 14:15:45,429 INFO L78 Accepts]: Start accepts. Automaton has 62463 states and 77701 transitions. Word has length 234 [2022-01-10 14:15:45,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:45,432 INFO L470 AbstractCegarLoop]: Abstraction has 62463 states and 77701 transitions. [2022-01-10 14:15:45,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 14:15:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 62463 states and 77701 transitions. [2022-01-10 14:15:45,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-01-10 14:15:45,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:45,457 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:45,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-10 14:15:45,457 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:45,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:45,457 INFO L85 PathProgramCache]: Analyzing trace with hash 683014141, now seen corresponding path program 1 times [2022-01-10 14:15:45,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:45,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905449904] [2022-01-10 14:15:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:45,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:45,502 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 14:15:45,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:45,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905449904] [2022-01-10 14:15:45,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905449904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:45,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:45,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052077251] [2022-01-10 14:15:45,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:45,505 INFO L87 Difference]: Start difference. First operand 62463 states and 77701 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 14:15:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:15:50,474 INFO L93 Difference]: Finished difference Result 124659 states and 155087 transitions. [2022-01-10 14:15:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:15:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 234 [2022-01-10 14:15:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:15:50,575 INFO L225 Difference]: With dead ends: 124659 [2022-01-10 14:15:50,575 INFO L226 Difference]: Without dead ends: 62334 [2022-01-10 14:15:50,622 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 14:15:50,623 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 1721 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 1729 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 14:15:50,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1721 Valid, 1729 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:15:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62334 states. [2022-01-10 14:15:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62334 to 62334. [2022-01-10 14:15:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62334 states, 62332 states have (on average 1.2441121735224283) internal successors, (77548), 62333 states have internal predecessors, (77548), 0 states have call successors, (0), 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 14:15:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62334 states to 62334 states and 77548 transitions. [2022-01-10 14:15:55,593 INFO L78 Accepts]: Start accepts. Automaton has 62334 states and 77548 transitions. Word has length 234 [2022-01-10 14:15:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:15:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 62334 states and 77548 transitions. [2022-01-10 14:15:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 14:15:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 62334 states and 77548 transitions. [2022-01-10 14:15:55,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 14:15:55,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:15:55,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:55,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-10 14:15:55,612 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 14:15:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:15:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1384660085, now seen corresponding path program 1 times [2022-01-10 14:15:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:15:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299172221] [2022-01-10 14:15:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:15:55,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:15:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:15:55,660 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 14:15:55,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:15:55,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299172221] [2022-01-10 14:15:55,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299172221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:15:55,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:15:55,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:15:55,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780253633] [2022-01-10 14:15:55,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:15:55,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:15:55,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:15:55,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:15:55,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:15:55,662 INFO L87 Difference]: Start difference. First operand 62334 states and 77548 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 14:16:04,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:16:04,397 INFO L93 Difference]: Finished difference Result 184278 states and 229174 transitions. [2022-01-10 14:16:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:16:04,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-01-10 14:16:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:16:04,602 INFO L225 Difference]: With dead ends: 184278 [2022-01-10 14:16:04,603 INFO L226 Difference]: Without dead ends: 122082 [2022-01-10 14:16:04,648 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 14:16:04,649 INFO L933 BasicCegarLoop]: 2127 mSDtfsCounter, 1578 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:16:04,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 3819 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:16:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122082 states.